i rejetted my 01 520 mxc
ocemn needle 3rd clip
165 main
.75 turns on air screw
i also removed the crank breather tube from the carb.
the problem is that it seems to be backfiring way too much when off the throttle. normally, from a half throttle acceleration to closed throttle, it will pop 3-4 times as soon as the throttle is closed. after a high rev full throttle acceleration, its even worse. i have tried moving the needle and changing the air screw with no results. have the stock mxc exhaust w/ sa. i know its not a big deal, but if i can fix it, it will make the muffler packing last longer. my buddy rejetted his 400 and it doesn't backfire at all.
later
ocemn needle 3rd clip
165 main
.75 turns on air screw
i also removed the crank breather tube from the carb.
the problem is that it seems to be backfiring way too much when off the throttle. normally, from a half throttle acceleration to closed throttle, it will pop 3-4 times as soon as the throttle is closed. after a high rev full throttle acceleration, its even worse. i have tried moving the needle and changing the air screw with no results. have the stock mxc exhaust w/ sa. i know its not a big deal, but if i can fix it, it will make the muffler packing last longer. my buddy rejetted his 400 and it doesn't backfire at all.
later