Carb backfire / Glowing red pipes 82 fl
The bike is backfireing thru the carb seems to be worst in mid rpms, but will back fire at idle and higher rpms. The pipes are turning RED HOT close to the exhaust port. One plug insulator is half white half black the other plug is dark, the electrodes are very clean. Changed gas. It would seem the bike is lean, so I disassembled the carb cleaned it completely and still have the same problem. And yes I checked for air leaks. The bike sat for about 3 years and the drag pipes that were on the bike rusted thru so the owner put on regular stock style mufflers. Jets are 72 idle 175 main. Stock Electronic ignition. Any ideas where to look next. It seems to be jetted for the drag pipes, so I would think it would be rich with stock mufflers.
Thanks for your help