Re: Running rich

[Tpcutter@xxxxxxx]

In a message dated 9/1/04 9:18:49 PM Eastern  Standard Time, 
pieter_de_k@xxxxxxxxx writes:
The soot is black. The bike  doesn't misfire, but it does backfire 
occasionaly.
What I am trying to  determine is why one cylinder runs richer than the other.
What part of the  fuel system (or ignition) could be out of balance to cause
this?

The  only things that come to mind as possibilities are: 1) Leaking injector 
or  partially obstructed injector, causing an imbalance, or 2) an air leak in 
the  intake tract on one side.

I am operating on the  ASSUMPTION that the damaged cylinder was repaired 
totally correct, and that  there is no valve leakage. A cylinder leakdown tester 
would answer that  question.

Also, maybe it isn't richer, but one side  has a weak spark caused by an open 
spark plug resistor. Just swapping plug leads  from left to right would 
reveal that condition.

Tom Cutter  

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