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"KRS/GT" Technical Q&A K1200RS/GT Technical Questions/Answers

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  #1  
Old 04-12-2017, 09:27 PM
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Question 2003 BMW K1200GT 56,000 miles – Will not start –

2003 BMW K1200GT 56,000 miles – Will not start – .
1. New battery BMW German original one year old plus 2 new factory keys.
2. Motorcycle stored outside under cover without battery 4 months.
3. Battery was removed and was on a CTEK 12v Trickle Battery Charger/Maintainer for those 4 months.
4. Works well and started normally prior to the winter storage.
5. Battery reinstalled fully charged.
6. Center stand folded up properly.
7. Side stand folded up proper.
8. Clutch released and kill switch in the run position.
9. key in and switch to on/run.
10. pressed started button – good solid starter action/cranking but it did not start.
I tried it several times.

11. TPS reset:
Here is what to do after replacing the battery.
1) Turn the ignition key on.
2) Turn the kill switch to the on position.
3) DO NOT START THE ENGINE.
4) Roll the throttle full open, hold open for 2 or 3 seconds.
5) Roll the throttle off.
6) Repeat steps (4) and (5) three times.
5) Turn the key off.
You're now re-set. ???

Re: Bike won't start.
How about a computer re boot. Disconnect the battery for a couple of minutes, then reconnect it. Turn on the ignition do not start, see if you have the proper computer check going on. If so, move the throttle from zero to full throttle and back with deliberation three times. Turn off the ignition, (this is the throttle set procedure). Now turn back on and start the bike after it goes through it's start check. Hope this works.

12. It did not start.
13. GS-911 ran test for faults – none other than the hall sensors not running when test were made.

Until this problem.
1 Fuel lines / pumps and filters all replaced in 2015. (ouch!)
2 ABS unit repaired – by me – circuit board had some fried traces. Tests fine / no problems.
3 Complete 50,000 miles service 2015 factory authorized repairs. (ouch!) only 6,000 miles since then.

I am tired of (ouchs !) I want some ride time – any ideas other than back to the factory authorized service (ouch!)

Your help and comments appreciated.

Today - Gave up and had it towed to the shop (ouch ! ). I hope it is not too bad to diagnosis. They said they could get to it yet this week. Rain is forecast so no missed riding anyway. I will post the solution and the cost.
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Old 04-12-2017, 09:46 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Check your kickstand switch.

I'm sure others will I'll chime in. Good luck!
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Old 04-12-2017, 09:50 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

You know, I did not even think of that one - you know I just assumed? I will soon find out.
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Old 04-12-2017, 11:00 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Seems like there's 3 cables to the battery, 1 to the positive and 2 to the negative post.
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Old 04-12-2017, 11:32 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Dumb question, but was it in neutral? Even if the side stand was down or if the switch failed, it should start in neutral....
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Old 04-13-2017, 10:00 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

As well as all the likely simple causes which you checked, if it's turning over and not starting I would look for the basic reason why it doesn't start ie. either no spark/weak spark) or no fuel/ bad fuel. Take a plug out or fit one of those spark testy things - does it spark when cranking, was/is the plug wet with fuel?
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Old 04-13-2017, 10:04 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Quote:
Originally Posted by TonyB54
As well as all the likely simple causes which you checked, if it's turning over and not starting I would look for the basic reason why it doesn't start ie. either no spark/weak spark) or no fuel/ bad fuel. Take a plug out or fit one of those spark testy things - does it spark when cranking, was/is the plug wet with fuel?
Yeah, the big clue was that it's cranking, just not firing up.
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Old 04-13-2017, 11:50 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Don't have a GT but an LT and lots of the systems are the same or very similar. If it is cranking then all the starter interlocks are met eg. side stand, not in gear, kill switch in center. As already stated, if the GS911 doesn't a fault which it normally does show a hall sensor fault when not running, you seem to have a fuel supply issue. Hall sensor can be verified by checking for spark. If you have spark, then the hall sensor is sensing. Listen for the fuel pump to prime, key on, stand up, not i gear and flip the kill switch on and off. You should hear the pump run momentarily and then shut off. If you hear this, open the tank and look for excessive fuel motion/agitation or spraying if the fuel level is lower than the pump rubber hoses during this prime sequence. It would not be the first time i have heard of a dealer not using submersible hose inside the tank so be aware of that possibility that the hoses have deteriorated in that short amount of time and have burst. Also, one of the hoses may have popped off under the pressure. The fuel filter may be clogged with water if the ethanol fuel in the tank gathered moisture and separated which would be the first thing sucked up on a restart.

Good luck.
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Old 04-13-2017, 12:48 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Fuel supply is what jumped out at me on this. Though, my bike still cranks but will not fire if the side stand is down....so do check that switch for pebbles, etc.
But, since the fuel pump, filter and hoses were changed two years ago, this jumps up to me as bmwcook1200 notes.....a line may have popped off, of if poor quality, failed. Still, all those checks for spark and fuel and fuel pressure are important. See several posts by Pierre - PBEgan - on using a T'd in pressure gauge on the fuel lines to be sure you have pressure, but, maybe it is easier to just pull the filler mechanism and reach in with a fully gloved hand?
Good Luck!!
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Old 04-13-2017, 11:00 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Checked kickstand switch - OK
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Old 04-13-2017, 11:01 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

3 cables to the battery, 1 to the positive and 2 to the negative post - Checked and OK - new battery and bolts
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Old 04-13-2017, 11:04 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Never a Dumb question! Was it in neutral? - Check that neutral.
I tried it with the stand down and up - Checked that
Neutral with the clutch released - not engaged - Checked that too.
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Old 04-13-2017, 11:08 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

no spark or weak spark, or no fuel or bad fuel.
Fuel tank was drained and cleaned 2015.
It has a fuel tank of fuel from December 2016.
I have not removed the plugs yet.
Take a plug out or fit one of those "spark testy things" ??? what are those?
Can you give me a link or a direction on those?
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Old 04-13-2017, 11:18 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Quote:
Originally Posted by bmwcoolk1200
Don't have a GT but an LT and lots of the systems are the same or very similar. If it is cranking then all the starter interlocks are met eg. side stand, not in gear, kill switch in center. As already stated, if the GS911 doesn't a fault which it normally does show a hall sensor fault when not running, you seem to have a fuel supply issue. Hall sensor can be verified by checking for spark. If you have spark, then the hall sensor is sensing. Listen for the fuel pump to prime, key on, stand up, not i gear and flip the kill switch on and off. You should hear the pump run momentarily and then shut off. If you hear this, open the tank and look for excessive fuel motion/agitation or spraying if the fuel level is lower than the pump rubber hoses during this prime sequence. It would not be the first time i have heard of a dealer not using submersible hose inside the tank so be aware of that possibility that the hoses have deteriorated in that short amount of time and have burst. Also, one of the hoses may have popped off under the pressure. The fuel filter may be clogged with water if the ethanol fuel in the tank gathered moisture and separated which would be the first thing sucked up on a restart.

Good luck.
WOW! a lot of information here.
I do not know many that have a GS911. Thanks for the information on the faults.
Fuel supply issue.
Listen for the fuel pump to prime.
I believe I heard the pump run momentarily and then shut off.
I looked in the tank for excessive fuel motion and could not see any motion.
Dealer not using submersible hose inside the tank - possible - the shop has a good rep.
Hoses may have deteriorated in that short amount of time and have burst.
Hoses may have popped off under the pressure.
The fuel filter may be clogged with water if the ethanol fuel in the tank gathered moisture and separated which would be the first thing sucked up on a restart.
That is some thing that I did not think would happen - but this is Texas in the winter.
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Old 04-14-2017, 09:55 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

4+ months old gasoline?

http://www.autoblog.com/2008/03/31/does-gas-go-bad/
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Old 04-14-2017, 12:41 PM
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Talking Re: 2003 BMW K1200GT 56,000 miles – Will not start –

4+ months old gasoline?

YES! that is what happens to a Winter Parked / stored / Bike. No ridding = old gas, but then again I am an old fart. I did not think of water in the gas or of condensate. The fuel system is a sealed system. When I opened the gas cap there was a gush of vapor. It was then in the sun and the tank had warmed. I checked the tank for fuel level and clarity with and LED pen light. I could not really see to the bottom but it looked clear and clean and almost full tank. I am beginning to think that it really is a fuel / spark problem. Going to be working on that this weekend - yes again, working instead of riding.
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Old 04-14-2017, 04:51 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Hum....tank pressurised?We don't have the charcoal canister in Canada but still.....tank should vent out pressure even with the canister?Canister may be full of gas? More of a GS problem that when they get dropped and the canister fills up but they do run like shit when that happens.

83 Toyota was running shitty last fall.Barely idled and stunk.Bad gas allright,what was in the tank is all my old gas over 3 months old and who knows when I had put that gas in there.Ran much better when I dumped 4 months old gas in it.The 4 months old gas I had forgotten to stabilize and made my snowblower run like shit.
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Old 04-14-2017, 05:25 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

I have a 1980 Mazda RX7 Rotary Engine. I started it, last month, for the first time in 7 years. Carb cleaned - fuel was stabilized ? A little starting fluid and an almost drained battery -- "In a giant cloud of white smoke and a hearty backfire" it started. Runs badly but it does run. It will be going to an independent Mazda garage. "Rotary Performance" they specialize in these rotatory engines. He said that a complete fuel flush, all new fuel filters and cleaning the carb are the minimums that needs to done. So I can easily see your point.

Working on getting to the fuel "rail" and spark plugs out of the BMW now. Going to clean and service the plugs plus drain the fuel lines a bit to see what comes out. Then it will checking "all the fuel lines and hoses" bugger!
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Old 04-14-2017, 06:17 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Filter installed "backwards"? There is usually an arrow indicating the direction of flow...
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Old 04-14-2017, 08:04 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Quote:
Originally Posted by azhirise
I have a 1980 Mazda RX7 Rotary Engine. I started it, last month, for the first time in 7 years. Carb cleaned - fuel was stabilized ? A little starting fluid and an almost drained battery -- "In a giant cloud of white smoke and a hearty backfire" it started. Runs badly but it does run. It will be going to an independent Mazda garage. "Rotary Performance" they specialize in these rotatory engines. He said that a complete fuel flush, all new fuel filters and cleaning the carb are the minimums that needs to done. So I can easily see your point.

Working on getting to the fuel "rail" and spark plugs out of the BMW now. Going to clean and service the plugs plus drain the fuel lines a bit to see what comes out. Then it will checking "all the fuel lines and hoses" bugger!

Q-tips test on the fuel lines? A bit tedious cleaning them with the bore brush but should be done if they don't pass the test.I used Methyl Hydrate but you can't leave that in there,too aggressive to rubber.Clean and blow out right away.

You can run the pump from a battery and click the injectors open one by one.Watch out they will spray a long way .Clicked open that is about 7-8 ft with pump running.Shoot in a 5 gal.bucket? Black bucket to check spray pattern.

Clean tank/lines and new fuel filter? A must and I don't care what others think,25,000 kms is max for me.

Nasty looking one with 10,000 kms? I should have opened it before.Looks like the FI cleaners did their job.Cleaned the crap from the filter and sent it downstream into the injectors.
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Old 04-14-2017, 09:36 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

I will be checking that Saturday. So far the spark plugs are good - not wet with fuel. It does not appear to be electrical right now. It is looking more and more to be a fuel problem. Soooooooooo - off comes the tank -- Bugger Bugger! This is not really my specialty.
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Old 04-14-2017, 09:58 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Boy this sounds like a lot of work but it is looking more and more like a fuel problem. If I have to open the tank everything is going to be repaired or replaced. I believe I had it serviced and they replaced everything or so I thought - about (I checked -about 3000 miles ago) it seemed a lot longer then that.
1. clean tank
2. check and service injectors
3. check / clean / replace hoses
4. new filter
5. maybe a new fuel pump $$$ ouch!
Methyl Hydrate -- good stuff -- please see the link below. I have to get some.

http://www.bikeforums.net/bicycle-me...l-hydrate.html

It looks like no riding for a week or so especially if I need to get parts. This is going to take a while. Thanks every one for your help on this. I am learning more than I wanted to know. I wanted to ride more but knowledge is power and communing with the guts of your machine can be somewhat therapeutic (and time and money consuming).
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Old 04-15-2017, 07:29 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Quote:
Originally Posted by azhirise
Take a plug out or fit one of those "spark testy things" ??? what are those?
Can you give me a link or a direction on those?

http://www.mad4tools.com/silverline-...D)%20Scru ffs

or a non contact type

https://www.machinemart.co.uk/p/guns...FUwo0wodyFYPEQ

Both UK suppliers but no doubt available world wide
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Old 04-15-2017, 09:21 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Prudent thing the fuel injectors cleaning.

Cheap fuel pump? You can fit a Bosch 69222 in there rather easily.Output side is smaller than the VDO oem so I made an adapter out of 3/4" UHMW.I have many sizes of hole saws so OD was easy.Couldn't exactly match the ID but the Dremel got me there.

Happy little pump.....so quiet that I can't hear it.Old one was getting noisy at 175,000 kms.

Add a foot of submersible fuel line to that?I cut a short piece for the filter to pipe.Leftover gave me the U-shape for the pump to filter.

So about $130.00 CAD for the pump/line.

Methyl Hydrate? Any hardware store will have that for woodworkers.I buy it by the gallon....much cheaper.The truckers use that to prevent brake freeze (?) on their logging trucks.
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Old 04-15-2017, 09:34 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

I would spray some carb cleaner in each of the spark plug openings first before tearing the thing all apart and then see if she starts up! It may only fire up for a second but then you will know it's defiantly a fuel issue!
I doubt all 4 fuel injectors would plug up at the same time! Although 4 month old gas is not the greatest, I really doubt it would be so bad that it would not fire, hear in the Midwest I put my bike away in October with a full tank and dont take it back out till march!!
If the feed line came off in the tank, the pump would run constantly and you would surely hear the pump running!
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Old 04-15-2017, 10:49 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Only way for the pump to run constantly is when cranking or engine running.

Key on and the pump only runs to prime the system.So disconnect the feed line and stick an old QD in there,same as a popped line in the tank.Key on.....pump runs for 2 seconds and stops.

OP should bench test the system in close loop/rail attached and a fuel pressure gauge in line.Start pump with a battery and let it run.Stop and watch the bleed down pressure over an hour?

No doubt in my mind that all the injectors can be plugged at the same time.
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Old 04-17-2017, 09:19 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Fuel pump not working ! :-(
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Old 04-17-2017, 09:24 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Fuel pump not working ! :-(
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Old 04-17-2017, 11:30 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Fuse?
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Old 04-18-2017, 03:25 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Is there gas in it?, I mean to say did you actually check to make sure there is gas in it? Cold o rings and hose connections can leak. Did you pull the plastic and check to see who is living in your air box and how many kids they have?
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Old 04-18-2017, 09:29 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Quote:
Originally Posted by azhirise
Fuel pump not working ! :-(

And how exactly did you find that out?You are not giving us much to think about as to causes.

Fuse then if good a test light on the connector under the tank.Ignition on,light will come on for about 2 seconds.And inspect the wiring under the tank,there should be a ziptie to hold the connector/wires on the pump side.If missing the connector will flop around and the small wires may break.

They'll blow that fuse real quick if there is a blockage.Plugged filter,disconnected return line or blocked fuel pressure regulator.

GS911? One of the tests runs the fuel pump.

Not uncommon the pump seizing during storage.GS problem? Maybe not but there are more of them around.And they use the same pump on the pre-1200.There is a recommendation out there to cycle the ignition once in a while during storage to prevent seizure.

And some have connected them on reverse polarity and freed them.
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Old 04-18-2017, 02:40 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Here's a photo of a Gear from a pump that had been sitting for a while. It had rusted and seized together with another gear. A light tap with a hammer freed these up in another pump which had not been sitting so long.

http://www.i-bmw.com/attachment.php?...1&d=1492540615
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Old 04-18-2017, 10:41 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Yes - mine was frozen solid. Fuse was fine. Injectors cleaned and work fine. Tested the pump with a meter and it was not going to move. I just replaced it with a new BMW part (Ouch ! $). But it runs fine and starts almost immediately. Fuel and tank were clean - no problem there. The hoses were replaced on the last service as was the filter. I replaced the filter again because I was already in there and I could.
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Old 04-18-2017, 10:45 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Funny that the GS911 did not pick up the problem and the fuse was OK? The fuel pump just would not budge. The tank and fuel were clean. Hoses were replaced last time it was service. Well, I have a new BMW fuel pump now.
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Old 04-18-2017, 10:48 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Near full tank of 3 month old gas. Fuel and tank were clean. I just replaced the fuel pump and it works fine. All it takes is time and money. The fuel pump seems to be seized up. My GS911 did not indicate a fuel pump problem.
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Old 04-18-2017, 10:50 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Fuse OK Pump not - Pump replaced with filter (BMW pricing) ouch ! - But it starts and runs now.
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Old 04-18-2017, 11:00 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

New things to think about - brake line replacements, fuel tank quick disconnect, and another big one probably the end of this riding season - an engine seal with clutch replacement - seems to be in future. Oh! one more thing - I replaced the steering stabilizer last year - it was a big zero when I replaced it. So now I have officially put more into it in parts and labor than I paid for it back in 2012. The previous owner clearly did not do the maintenance that was required so now I am picking up the neglected work.
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Old 04-19-2017, 12:28 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Quote:
Originally Posted by azhirise
Near full tank of 3 month old gas. Fuel and tank were clean. I just replaced the fuel pump and it works fine. All it takes is time and money. The fuel pump seems to be seized up. My GS911 did not indicate a fuel pump problem.

I believe the GT is like the LT in the respect that the fuel pump or pressure is not monitored in any way so no fault will be logged when it goes south so the GS 911 is useless for that particular failure. Glad it is running again and yes, the brake lines would be a good thing to think about as the next project. It isn't a matter of if, it is when they will give out on you.
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Old 04-19-2017, 01:01 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

If I were you I would not hesitate to swap out the brake lines and the quick disconnects - those really are safety issues.
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Old 04-19-2017, 10:05 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Two fuel pumps in 2 years?That would make me wonder as to why?Is the tank venting as it should?If not you may be stressing the pump.

Earlier comment about rush of air/fumes coming out when you opened the cap?

Cut open the pump?Motor seized from overwork or impeller from corrosion?
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Old 04-19-2017, 10:03 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

I was mistaken about the fuel pump being replaced. It was pretty much everything but that. I found the service receipt for the work - The fuel system at that time was leaking internal to the tank. The rubber parts were crumbling and cracked. Everything but the pump was replaced at that time. That is probably why the fuel pump fail this time - not all the "JUNK" in the system was filter out and some of it got into the pump seizing it up.
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Old 04-19-2017, 10:24 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

That is another thing that I missed. I took in for a much belated 50,000 service to Quality Cycle Service in Mesa Arizona when I lived there. It was a big bill and a long list of stuff done. I lived in an apartment at the time and could not do work under the carport. While they were draining and servicing the ABS they notice two questionable brake lines which they replace with factory rubber and replaced the rear master cylinder as the plastic parts were defective / sun baked. They found many things that need help then and maybe need in the future. I more or less drew the line $1800.00 of repairs. They gave me the list and I have just rediscovered it. Many of the suggestions from the forum are on the list. I have the bike running and starting like a champ and took it for a drive this afternoon. Boy, I miss riding it! Right now all I have to work under is a Shumard Red Oak that shades the patio. Right now I am a real “shade tree mechanic”. So now as time and money allow I will be going through the list. I will probably have a shop do the engine bear seal and the clutch – I do not think the tree and the weather will allow that much be done outside. Once I get a real “garage space” I will probably get a motorcycle service lift.
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Old 04-19-2017, 10:33 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Believe me they are high on the list. I am thinking of the American made ? Speigler brake lines. I will see if they have a kit that has all the parts.
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Old 04-20-2017, 04:20 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Glad you got it figured out!
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Old 04-20-2017, 04:42 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

It took awhile - plus a lot of good advice from the forum. Thank You All.
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Old 04-20-2017, 05:28 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Quote:
Originally Posted by azhirise
Believe me they are high on the list. I am thinking of the American made ? Speigler brake lines. I will see if they have a kit that has all the parts.

For Spiegler, just don't waste your time, go to Jerry at www.pirateslair.net - he's a long time site participant and supporter and will take care of you. Here's a thread on the installation process for the brake line, http://www.i-bmw.com/showthread.php?t=38778, and yes the kit is complete, and Jerry will verify with you whether you have bar backs which may require a different (longer) line from the front bars before he sells you the kit.

For the gas line quick disconnects go to www.beemerboneyard.com.
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Old 04-20-2017, 08:51 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Thanks - I Mean, really THANKS, for the links. The help is always welcome.
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Old 07-03-2018, 04:42 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Just a note on comments made in this thread. Just because you can hear the pump prime the fuel rail when you turn on the ignition is no guarantee of the health of the pump.
I went to start my bike last week after three months and it would not start. Nadda, Nill, Nothing. It would crank till the cows came home, or the battery went flat but no fire. I checked the plugs for spark and that was solid, and the new plugs were wet, but really only damp. And that was the tell tale. I pulled the pump and powered it up on the bench. It sounded really sick, so it turned enough to get a small dose of fuel to the injectors but not enough to combust. I had a spare on the shelf and when I powered that up it sounded perfect - just like any small electric motor should. So, just because the pump will prime the rail is no guarantee that it will provide enough pressure to start the bike. I changed over the pump and she purred beautifully.
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Old 07-03-2018, 07:10 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Quote:
Originally Posted by Flying Kiwi
Just a note on comments made in this thread. Just because you can hear the pump prime the fuel rail when you turn on the ignition is no guarantee of the health of the pump.
I went to start my bike last week after three months and it would not start. Nadda, Nill, Nothing. It would crank till the cows came home, or the battery went flat but no fire. I checked the plugs for spark and that was solid, and the new plugs were wet, but really only damp. And that was the tell tale. I pulled the pump and powered it up on the bench. It sounded really sick, so it turned enough to get a small dose of fuel to the injectors but not enough to combust. I had a spare on the shelf and when I powered that up it sounded perfect - just like any small electric motor should. So, just because the pump will prime the rail is no guarantee that it will provide enough pressure to start the bike. I changed over the pump and she purred beautifully.

Richard, Thanks for the story and follow-up lesson. I knew that you would not assume anything... congratulation ;-)

In many past threads, I have posted that you cannot assume or think like working on a 1970-1980 era carburator engine. A modern EFI engine needs a very tight / specific range of fuel pressure at each injectors to start AND to function at higher RPM.
For the K1200RS: as per shop manual 50 PSI (my best acceptable guess, say about +/- 8% max).

Above affected by many components from Pump, Fuel-filter, Hoses inside tank, fuel pressure regulator, proper voltage and flow at each injectors. Buying a fairly cheap pressure tester gauge-kit (about $US 65) will confirm that you have proper pressure toward fuel rail. However, this tool alone will not confirm each injectors is working.

P.S.: Richard: did you put an aftermarket new pump OR a used one you bought cheap??
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Old 07-03-2018, 09:40 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Quote:
Originally Posted by sailor
Richard: did you put an aftermarket new pump OR a used one you bought cheap??

Hey Jean, thanks for chiming in. I acquired a few bits from a mate who is fitting a 1200 into his Hillman Imp race car. I did mention this many months ago, and it is still work in progress... Included was a low mileage oem pump, so I got lucky as it's in great shape - audibly anyway.
What is your take on cleaning injectors as preventative maintenance? 170,000 km's on the dial, absolutely no ethanol fuel, and used only for long haul riding.
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Old 07-04-2018, 07:51 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Quote:
Originally Posted by Flying Kiwi
..
....
What is your take on cleaning injectors as preventative maintenance? 170,000 km's on the dial, absolutely no ethanol fuel, and used only for long haul riding.

Richard,
Mine is still running well with pretty good fuel mileage at 152,000 KM (94,000 miles) - to me this is a pretty good test to decide if you need to pull the trigger on an injectors job.

Technically, only based on time and mileage, most would say mine and yours (injectors) should have been checked for balance and cleaned a long time ago.

These so-called "good practice" and rules-of-thumbs of various facts like injectors should be checked and cleaned at so-much mileage (50 to 100K KM) are just averages. With good maintenance (fuel filter) and good quality fuel, one can go much beyond these "averages".

MY CONCERNS:
HOWEVER, even with rules above and some common sense , we need to keep in mind the slow progressive degradation of a component that a rider cannot even see (and he gets used to it). Fuel mileage can be good, but some injectors can be out-of-balance compare to others. This may introduce other symptoms like subtle engine vibrations at certain RPM / conditions.

The other concern is the facts our engine (like most motorcycles) have a single Oxygen-sensor - this by design forces the ECU to make decision based on an average of 4 cylinders mixture. Hence, for peace-of-mind and to make sure I do not fall into the case of one-or two leaner cylinders, I plan to have my injectors checked and cleaned soon when bike is in storage for winter.
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Old 07-04-2018, 03:28 PM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Had mine done a while ago, smoother running. System balance slightly improved.. 13.4-1.3




<a href="<img src=" http:="" www.i-bmw.com="" gallery="" data="" 1725="" thumbs="" rc_gt_injector_clean.jpg"="" alt="RC_GT_injector_clean.jpg" title="RC_GT_injector_clean.jpg" border="0">>
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Old 07-05-2018, 04:39 AM
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Re: 2003 BMW K1200GT 56,000 miles – Will not start –

Thanks Jean, I will leave well enough alone for now. I have replaced the temp gauge on the block behind the #4 cylinder, and also the lambda sensor in recent times. She runs sweet although there is a sudden and noticeable amount of oil being consumed now as she ages. About 200ml per 1000kms whereas in the past she has used none between oil changes. Probably time to slow the speeds down and put a self imposed limit on revs used, and accept that these big heavy bikes are getting long in the tooth. I just cannot keep up with my mates on their mega powerful and light offerings from BMW and the like in the twisties no matter how hard I try. And I try hard
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2002 K1200RS. Owned from new. Pacific Blue, Ohlins, Speiglers, Fiamms, HID, Factory GT heated seat. 170,000km
1991 K1. Schwartz metallic black, fully restored. 74,000km SOLD
1987 K100RS Style. Black, Ohlins, Race Tech springs, Braided lines. Fully restored. 53,000 miles. SOLD
The family history:
1951 AJS 500 single - my Dads ride
1953 Triumph Terrier - my Mum's ride
1916 Triumph Type H, Battle of the Somme, France WW1 - my Granddads ride
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