richirich1113
Member
i have got a wird one here. i just reacently completed building my bike. everything seemed ok for about 6-7 10 min runs while i was breaking it in. then i put an expansion chamber exahust on. the it could be a coincidance but not to long after that i can not get the bike to idle right. it starts doing wird things like it would be idleling the i give it a alittle gas and let off and it revs out and wont stop till i turn the idel screw down the it idels down and wants to die so i turn it in alittle and it will just rev out again without touching the throttle. another thing then ill get it to idel again and i try choking the card and istead of killing the motor it will rev out like im opening up the throttle. This has got me perplexed i feel ive tried everthing. ive changed the carb (i have another bike with a nt that i know works right) and it still does it .ive put a new intake gasket- nothing. a new throttle cable thinking it might be stickin -nothing Im wondering if maby the carb is to small for the motor or maby a problem with the ignition. to get a feel for the bike it is a 58cc phantom eddition moter, expasion chamber exhaust , jaguar ignition system. any ideas would be appreciated if you need any other info to make a diagnosis let me know . frustrated and out of ideas