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One cylinder misfires

I am in Vietnam with no authorized mechanics to help with a problem I am having with a 2002 BMW R1200c. When I got the bike it wouldn't start at all. After jumping the coding plug I got the bike to start but left side cylinder misfires. I have tried switching injectors and wiring, switched ignition, checked and cleaned intake manifold, and checked camshaft timing. Any ideas?

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  • BMW Master
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Posted on Jan 05, 2016

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6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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polarcycle
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SOURCE: left cylinder not firing,started ayear ago would

Does that model have one coil or 2? If it checks out fine on both sides, I would assume you have a carb issue. Not getting enough gas to that one cylinder. If the ignitor was bad, you wouldn't have fire to either coil.

Posted on Jun 05, 2009

  • 1 Answer

SOURCE: Intermitent ignition failure BMW r80

Guys ...this problem is caused by a faulty Bosch ignition coil (gray type). Replace both the Ignition control unit which is linked to this type of ignition coil (buy Transpo BM 300 - cheapest pattern type) & the ignition coil itself with a newer type 1990's model (red outlet points to spark leads.) & the problem will disappear. This is a known problem caused by hairline cracks in the gray casing. These cracks cause intermittent electrical disconnects when hot/wet - MICHAEL - DUBLIN - IRELAND

Posted on Aug 22, 2009

  • 22 Answers

SOURCE: Ignition problem with CB750K Honda

I have a 1980 CB750-F Super Sport and I went through this problem once.
After that long time, as MATHEW said, some gunk (gorilla snot) could be formed into the little carburetor's passages.
It will not come out if You don't "soak" the DISSASSEMBLED carburetors (without rubber parts) into carb cleaner for at least 6-8 hours.
After that, You can wash them with thinner, and then go on with compressed air.You'll be surprised with the amount of gunk that remained into the carburetor's bodies!!!
Good luck

Posted on Dec 02, 2009

  • 1 Answer

SOURCE: 2002 buell blast is running rough - missing - backfiring

Wow, my 2002 blast is doing the same thing, or at least it was untill it blew a hole through the exhaust and quit running all together. Time for a sportster.

Posted on Sep 05, 2010

  • 2 Answers

SOURCE: I have a 1994 Yamaha TTR250, bike was running fine

hey i have a ttr250 2000 model i had a very similar problem, it was misfiring and dropping out at high revs. i striped the carb cleaned everything out adjusted jet pins, oils, air/ fuel screw changed the spark plug nothing worked. in the end i got a can of carbi cleaner and sprayed it while the engine was running into the intake after alot of smoke coming out the exhaust. hey presto suddenly my bike works and revs fine. with a little bit of tuning good as new. so might be worth a try. I think it was from over oiling the air filter and the oil messing with the valves. hope this helps
aidan

Posted on Jun 10, 2011

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I just want a complete manual for my R1200C independant 2002 Bike Where can I get one ?


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I don´t think that there is a repair manual in English language available, I´m sorry.

Have a look at this book, (CLICK) , it is in German language but it comes with lots of wiring diagrams, pictures etc.

German is not a hard language ;)


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