Good day sirs,

My 86 TRX250 is backfiring through the carb at low idle. Trying to eliminite possible causes of this before I start checking things out.

Anyone have experience with this? Would adjusting the valves fix it? Could it be caused by a bad clutch one-way bearing?

I just rebuilt the carburetor and it seems to run ok at higher RPMS, just a random backfire through the carb at low RPM.

Any help is appreciated.