1krazyquadridr
06-01-2006, 06:03 PM
My 416 started backfiring and stumbling at Red Bud. I figured it was a carburetor problem and pulled the carb apart several times and haven't found anything plugged or wrong. But it seems that when ever I punch it from 3/4 to full throttle it will just backfire and stumble. I just replaced the head gasket and plug which offered no help. Anyone have any ideas, it ran fine for about a year prior to the race at Red Bud. Thanks