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View Full Version : my 250R is backfiring



ozzman
12-15-2011, 07:23 PM
ok this is what happened i was racing a friend and my CDI box went out i didnt know at the time so i changed the spark plug and nothing happened so after trying to push start it for like 20 mins i tested everything and it was the CDI box so i replaced it and now when i kick it over it backfires and if i do get it running it bogs down like crazy so i replaced the flywheel and stator still same problem i dont understand it it ran fine before that box went bad and now its not doing anything please help!! also it is an 85 ATC