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2005 R1200GS running rough
- Thread starter beemer01
- Start date
marine by choice
Marine By Choice #188306
Bad gas?
Texpaul
Lost again
Did this start after a fill up? Could be water in your gas. If that's the case put some HEET in the tank and that should take care of it.
Other thought would be a bad plug or coil cap. Did you check to make sure all the coil caps are on tightly? One might have come loose, or be failing.
Last thing, look for obvious air leaks such as a cracked rubber intake tube or something loose.
Other thought would be a bad plug or coil cap. Did you check to make sure all the coil caps are on tightly? One might have come loose, or be failing.
Last thing, look for obvious air leaks such as a cracked rubber intake tube or something loose.
I have a 2011 R1200GS and it says to change the plugs every 20,000 km. Maybe you need new plugs, as they sound like they are somewhat overdue. I have noticed observable electrode wear when I have changed mine.
If you have a GS-911 you could try resetting the adaptations.
Good luck,
David McDougall
If you have a GS-911 you could try resetting the adaptations.
Good luck,
David McDougall
deilenberger
A bozo on the bus
Given the symptoms - my immediate thought is one of the stick coils - a primary - has failed. Unfortunately the ECU doesn't store misfire codes.. so you can't diagnose this with the GS-911. The factory way to diagnose it is to replace the coils one at a time with known good ones. Have a friend nearby with a hexhead? Ask if you can visit and swap coils one at a time.
FWIW - someone else recently had the same symptoms (a search should turn it up) - and a new coil fixed it. The stick coils live in a very hot environment and are really run close to their limit. Having them fail isn't a surprise since they do it with regularity on German automobiles..
FWIW - someone else recently had the same symptoms (a search should turn it up) - and a new coil fixed it. The stick coils live in a very hot environment and are really run close to their limit. Having them fail isn't a surprise since they do it with regularity on German automobiles..
+1 Have had this happen on a couple of older GSs'. New coils and all was well.
deilenberger
A bozo on the bus
I'm unclear on how storms = contaminated gas.. contaminated gas is blamed for lots of things and is actually rarely the answer..
pauls1150
MOA #24991, south of Los Angeles
Sea Foam might work better than Heet if there's junk in the fuel...
To troubleshoot a potentially bad stick coil - catch it in the act, then just unplug the little harness connector at the top of the coil. If that doesn't cause the engine to drop idle RPM, that coil is bad.
To troubleshoot a potentially bad stick coil - catch it in the act, then just unplug the little harness connector at the top of the coil. If that doesn't cause the engine to drop idle RPM, that coil is bad.
deilenberger
A bozo on the bus
That will work - it will likely cause the engine to run rougher if the coil is good - or stall. The steppers should try to maintain the idle speed. The one that doesn't cause a change in the engine running quality IS the bad one.
One caveat - be VERY careful with the little tab that holds the connector to the coil - it is fragile and rough treatment will break it.
