TaLLBoneZ Posted May 2, 2008 Report Share Posted May 2, 2008 Ok so i have a 99 Banshee, its got some aftermarket things on the bike.. I got FMF Gold series with powercore silencers, pro design intake, std bore pistons, cool heads. Well i rebuilt the top end (namura piston kit) i went thru the break in according to the repair manuel, the plus were the color discribed that they should of been. well the 2nd day i let the machine warm up, putted around for a good 10 mins then i rode like normal.. it ran beautiful but @ the end of the day i lost a cylinder, figured it was a fouled plug so i change em both, then kicked it over. same problem, right cyclinder blowing hot air out n left low amount of cold air. i killed the bike n jus kicked the kick start, not movement... havnt riped the motor apart yet but im really looking to save $ on repairs so im trying to do this myself. Could it be the jets? i think theres 208's in now.. Quote Link to comment Share on other sites More sharing options...
2000twin Posted May 2, 2008 Report Share Posted May 2, 2008 Did you meen 280 jets?Sounds like one cylinder is not firing.. Quote Link to comment Share on other sites More sharing options...
bunboy1 Posted May 3, 2008 Report Share Posted May 3, 2008 check the choke tube between the carbs is still on. when i installed my pipes and rejetted, i forgot to connect that tube and my left cylinder was not firing. Quote Link to comment Share on other sites More sharing options...
rubberneck Posted May 3, 2008 Report Share Posted May 3, 2008 switch plug wires from side to side and see if problem changes sides. If it changes sides it is electrical if not to do a compression test with a reputable brand tester and report back those numbers. Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted May 3, 2008 Report Share Posted May 3, 2008 what fmf pipes are you using? you say gold series, but that means nothing. are they fattys? Quote Link to comment Share on other sites More sharing options...
TaLLBoneZ Posted May 3, 2008 Author Report Share Posted May 3, 2008 Opps yea they are fattys... n yes the sync tube is between the carbs... n i bought the quad from a buddy who i used to ride with so the only thing i added to the bike is the coolheads but i didnt do anything with the jetting.. the plugs were that light brownish color so i thought it was ok.. stock jetting is 200, i had 1 that was bored 40 over n the jets were 220's but im seeing people saying 280-300's.. idk im lost n sending the bike to the shop is pretty damn costly when i can do the same thing @ home myself.. Quote Link to comment Share on other sites More sharing options...
mopar1rules Posted May 3, 2008 Report Share Posted May 3, 2008 and what cc domes are you using now? so your main jets right now are 200? what is your current jetting....pilots, main, needles, needle clip postition, pilot screws turns? Quote Link to comment Share on other sites More sharing options...
rubberneck Posted May 4, 2008 Report Share Posted May 4, 2008 Did you try like i suggested and switch the plug wires from side to side to rule out bad coil/plug/cap etc? Try it first and let us know, then compression. simple 2 min check may save you a lot of headache. Quote Link to comment Share on other sites More sharing options...
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