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Hey guys... I have a 91' CBR 600, fixed the problem with the gas leak and now I have the bike starting fine and running. However, when i really wined it out at high RPM and then let off the throttle I get a heavy backfire when the engine revs down and throttle is completely taken off ... this happens only under stress not when the bike is at idle and revved high then let go.
Is the a common problem that can be fixed by and armature.
I have 3 ideas ...
Carb adjustment
Ignition Timing
Running lean
Any suggestions I will really appreciate.
Thanks for your help
Binks