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"K12S/KR" Technical Q&A K1200S/R Technical Questions/Answers

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  #1  
Old 08-05-2017, 05:46 PM
Y2K6-K1200S Y2K6-K1200S is offline
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No start after sitting two weeks

Heyas,
I went to start my bike to do a warmup before changing the oil. No start. Bummer.
This bile has ALWAYS started. Fuel, air, and spark makes fire. I did park it with low fuel, about a gallon left.
I went and got a gallon of gas. I can see it in the tank. I got it to kick but it didn't start which confirmed spark.
I let it sit for a while and worked on my new garage door opener. :P
I tried a quick shot of carb cleaner in each snorkel. It kicked and got the RPM to about 4k and it stumbled and died. Let it sit. tried again and it started and ran but would not idle.
I've read a few posts here and starting with the simple stuff: Fouled fuel line / filter / pump? TPS? I did turn the bike on and open the throttle fully a few times.

Anything else? My next step is a Guinness and a thinking man pose.
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Last edited by brucev : 08-08-2017 at 12:44 AM.
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  #2  
Old 08-05-2017, 06:03 PM
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Re: No start adter sitting two weeks

Ok, I'll take a guess. Sat for two weeks, low on fuel. Started, but wouldn't run after shots of "starter fluid". Sounds as if you are not getting adequate fuel flow. Check fuel filter and all else related to fuel flow. Perhaps low fuel level allowed contaminants from within the bowels of the tank to be sucked into the line.? Makes some sense since it will start with help but refuses to run after supplied "fuel" is used up. Sounds fuel related anyway.

Good luck and let us know.
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  #3  
Old 08-05-2017, 07:29 PM
Y2K6-K1200S Y2K6-K1200S is offline
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Re: No start adter sitting two weeks

Figured as much. Bummer.
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  #4  
Old 08-06-2017, 12:08 AM
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Re: No start adter sitting two weeks

This may, or may not help, no cost involved.

Turn key on, gently turn throttle to full, then back to idle position (hand off tube) do same again, then turn key off.

Take your thinking man pose, cross both sets of fingers, key on, hit starter button....good luck.
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  #5  
Old 08-06-2017, 12:29 AM
Y2K6-K1200S Y2K6-K1200S is offline
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Re: No start adter sitting two weeks

Honestly, I will try it.
Why is it so hard to find a fuel filter for a '06 K12s? I can't find it in the fiche at Max's, pandoras, and bob's air and fuel filter page doesn't show any fuel filters.
https://store.bobsbmw.com/series/k-s...rsfuel-filters

It's the simple things in life they say...
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Old 08-06-2017, 12:34 AM
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Re: No start adter sitting two weeks

They don't have a fuel filter (changeable) as such, just the tea-bag on the suction side of fuel pump.
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  #7  
Old 08-06-2017, 12:39 AM
Y2K6-K1200S Y2K6-K1200S is offline
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Re: No start adter sitting two weeks

That tea bag is the filter? That's shocking. I did see that at the boneyard though. Thought i was going crazy.
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  #8  
Old 08-08-2017, 12:25 AM
Y2K6-K1200S Y2K6-K1200S is offline
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Re: No start adter sitting two weeks

This is insane! I bought a strainer from Beemerboneyard and a couple other small things. They tacked on $12 bucks for shipping. Hmm, whatever.

I got an email today saying they were able to ship it for $4 less AND it was priority instead of ground, so they issued a refund. Who does that!!!?

Thought that was cool and wanted to share. Maybe with all the extra love in the transaction I'll put on my new fuel strainer and the bike will fire right up!
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  #9  
Old 08-09-2017, 12:33 AM
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Re: No start after sitting two weeks

Don't forget the possibility of a trash battery.
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  #10  
Old 08-09-2017, 10:54 AM
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Re: No start adter sitting two weeks

Quote:
Originally Posted by Y2K6-K1200S
That tea bag is the filter? That's shocking. I did see that at the boneyard though. Thought i was going crazy.

Yeah....my fuel injection specialist wasn't impressed by that. 30 microns filtration,sure not enough to prevent contamination of the injectors.

Filter screens(baskets) mounted on each injector also rated for 30 microns.
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  #11  
Old 08-11-2017, 12:29 AM
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Re: No start after sitting two weeks

@Beech - Battery is a few months old.
@pbeg - Thanks for mentioning the filters on the injectors. I'm hoping the new tea bag does the trick.
Thanks for the replies.
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Old 08-11-2017, 09:13 AM
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Re: No start after sitting two weeks

Personally I doubt its the (tea bag filter) would take a lot for that thing to plug up totally! And its not going to all of a sudden plug up because it sat for two weeks, maybe two years when the fuel turns to varnish, but not two weeks.
Sounds like the pump may have died, or something related to trigger the pump. take the (tea Bag) off and try it with out it on and confirm its not that. before wasting money on a replacement. A lot of cars today only have that tea bag in the tank and never have an issue, we burn 10x the fuel in a car versus the bike.
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  #13  
Old 08-11-2017, 11:01 AM
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Re: No start after sitting two weeks

YK, even a new battery is not at its best after setting in a BMW for two weeks. The definitive test is to hook a volt meter to it and read the voltage when you hit the start button, below 10 VDC and it is not a good thing. If your feeling you need to address your injectors here is someone that will bring them back to life.
http://www.mrinjector.us/
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  #14  
Old 08-12-2017, 01:13 PM
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Re: No start after sitting two weeks

Thanks Beech. Tank is off and drained. Looks like a big nut on the bottom to pull the innards out. You think the odds are good that the clog is further down? I think I have reached he point where I should get a repair manual. Will the DVD work in a 2011 macbook pro? I only have internet through the hot spot on my phone.
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  #15  
Old 08-12-2017, 03:04 PM
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Re: No start after sitting two weeks

I don't think the BMW DVD's work on Mac's. But hopefully someone will confirm. Is your electronic fuel pump controller (front side of tank) looking good, no corrosion? Here is some information on it, and how to bypass to check function.
http://www.hexcode.co.za/techinfo/el...ump-controller
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  #16  
Old 08-12-2017, 06:01 PM
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Re: No start after sitting two weeks

Thanks for that. My controller looks a little grimy but not corroded. Should this be replaced as a precaution as the link indicates there may be corrosion internally.? Can't find this on Max's or real OEM: http://www.realoem.com/bmw/enUS/part...81,0591_&mg=16

Did a bit more searching and I think this is it:
http://www.maxbmwmotorcycles.com/fic...4&rnd=07242017
16 14 8 523 262 SET: FUEL PUMP, ELECTRONIC0.14 1 $211.
Here is the same on RealOEM:
http://www.realoem.com/bmw/enUS/show...diagId=16_0700
I missed it because it is listed as Electronic Fuel Pump along with the actual fuel pump.

If this is bad would I have been able to get the bike to fire off of carb cleaner and then run for 10 seconds? Remaining fuel in the line?
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  #17  
Old 08-13-2017, 12:26 AM
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Re: No start after sitting two weeks

Here is the part, under fuel supply Max parts fiche:
16 14 7 720 776 FUEL PUMP, ELECTRONIC0.15 1 $206.23But.. all this stuff is expensive. I'd do the test with a jumper set up to be sure. All this is mentally difficult and trying. There is one thing causing the problem, finding it is a hunt. Tossing parts in is expensive and not always an easy path.
(since last summer BMW parts have jumped 25%. My social security goes up 2.4% next year. K bikes are the most expensive to maintain of all the BMW line. Sometimes it is a good thing to just light them on fire or part them out. Getting disgusted trying to keep mine on the road.)
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  #18  
Old 08-13-2017, 12:55 AM
Y2K6-K1200S Y2K6-K1200S is offline
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Re: No start after sitting two weeks

I watched the video on the jumper cable at https://burnsmoto.com/ and it makes a lot of sense to spend $25 to test than $225 for a new controller that might not be the issue.
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Old 08-13-2017, 01:30 AM
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Re: No start after sitting two weeks

YK, if you have not ordered anything, send me your address and I'll send you my jumper, you can mail it back. beech
PM... You choose, priority 2 day, or first class. If Priority (7$) just put it in the box when you mail it back.
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  #20  
Old 08-13-2017, 09:59 AM
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Re: No start after sitting two weeks

Wow no kidding! I won't work on the bike until 8/23 so ground is fine. I'll send you a PM with my address. Really appreciate it.
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Old 08-13-2017, 10:21 AM
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Re: No start after sitting two weeks

You don't need the dedicated jumper to run the pump for bench testing. Two butt connectors or alligator clips, some wire and attach to a 12V supply.

There has been a few reports of seizing pumps after a few weeks/months of bikes not running.Some have freed their pumps connecting the poles reversed and thus spinning the pump in reverse.

Remove the controller....blue plug into the pump has two wires. Blue is ground and yellow is positive. Pull the blue plug and connect pump to battery.

Pump controller part number is 16148523262, supersedes 16147720776.
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  #22  
Old 08-13-2017, 11:12 AM
Y2K6-K1200S Y2K6-K1200S is offline
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Re: No start after sitting two weeks

Beech, PM sent. Hold the shipping, I'm going to try the method pbegin just mentioned later today. Appreciate the help.
Remember the days when something was a simple fuse...
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Old 08-24-2017, 12:22 PM
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Re: No start after sitting two weeks

I used the jumper cable to the fuel pump controller after I put all the hoses back on. Fired right up. The bike sounds awesome without the air filters on!

Also, I did a search on the part number pbegin listed above and found:
https://www.turnermotorsport.com/p-1...uine-bmw-part/

$40 less than the dealer and Turner is pretty well known. Just thought I'd share the source.
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Old 08-24-2017, 02:03 PM
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Re: No start after sitting two weeks

Great news.
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  #25  
Old 09-06-2017, 12:42 AM
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Re: No start after sitting two weeks

Just a quick thanks to everyone that helped me out. Bike is up and running and I finally got my oil change done. Appreciate the help.
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Old 09-18-2017, 02:45 PM
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Re: No start after sitting two weeks

remove your injector rail then crank the engine measure how much fuel comes out of each injector if no fuel flows
check filter, check pump look for loose or dirty or rusty connection this would cause a resistant check there is fuel flow to the pump

check the electric cable that is attached to the rail for each injector

if you have a spark on each plug the fuel is getting through then the bike should fire up

have you switched the tank too reserve ????
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  #27  
Old 09-19-2017, 11:41 PM
Y2K6-K1200S Y2K6-K1200S is offline
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Re: No start after sitting two weeks

Hey Tommy, thanks for replying. Issue was resolved with a new regulator. I don't think my bike has a reserve.
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