Question about 1993 BMW K 1
Have you replaced the muffler or the exhaust system? This will cause it to backfire thru the rear pipe due to opening up the breathing. If not, it may be caused due to one of the injectors staying open slightly and causing fuel to leak into he combustion chamber & firing when it is not suppose to, on the exhaust cycle. This will not hurt anything just noisy.
Posted on Apr 11, 2009
Does this happen when closing the throttle? Under hard accelleration? All the time? Could be 'decelleration popping' as they jetted bikes pretty lean back then. It is common. Honda XL's and XR's came with a wire mesh screen in the airfilter to keep sparks from this lighting the airfilter on fire. If it only happens with closed or partly closed throttle, it is no big deal.
Posted on Nov 20, 2008
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