Question about 2003 BMW K 1200 LT
It idles smoothly at 1000 rpm but just above an idle it hesitates, then surges rather violently. Gas mileage has been normal and I changed the spark plugs which had no effect. At high rpm it smooths out again. I hooked a GS-911 analyzer to it and it showed no faults. It does seem to get a little better after the engine warms up some, but never runs properly.
Check throttle and choke controls are not sticky and air filter. If this is the injected engine the high pressure system seems at fault, you could try an injector cleaner additive that removes gum. consistent warm running suggests not a major problem
Posted on Sep 14, 2009
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Posted on Jan 02, 2017
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