backfire on f650
Hello, my F650 funduro backfires when rolling off the throtle, but only when your giving it some gusto. The exhaust is standard and I have just had the original carbs balanced ( which were fine )and the nuts tightened on the exhaust. The guy in the garage said the gas emissions analyzing machine???? showed everything to be fine which would indicate no problems with shims. I have'nt checked shim clearance yet as its a job i want to try and avoid but can not think of anything else. Any ideas???
|