fastLANE Posted September 17, 2006 Report Share Posted September 17, 2006 My banshee is firing on 0n 1 cylinder %80 of the time. It is an 04 w/ fmf pipes , dynojet jet kit and weisco .20 pistons and a k&n filter...lid on with no snorkel. I cant figure out the problem. The top end is a fresh rebuild and ran great for the first half hour. Now it sputters and is slower than my blaster and only has slightly over an hour on it if even. I did a comp test and both sides read 135. I cleaned the carbs and swapped the plug wires and no change from side to side in preformance. I put new br8es plugs in and it still only fired on one side. I am runing 32.1 motul with 94 octain. The jets are 280 / 25 and i am at sea level here in south florida. Please help me trouble shoot the problem so I can get back on the road again. Thanks! :shoothead: -Bryan Quote Link to comment Share on other sites More sharing options...
Handyman Posted September 17, 2006 Report Share Posted September 17, 2006 What side is not firing??? Try swapping the pilots and main. I would suggest a 310 or 340 main and a 27.5 pilot. Quote Link to comment Share on other sites More sharing options...
Bill Posted September 17, 2006 Report Share Posted September 17, 2006 (edited) If the only mod you have is A k@n with the lid the your jettings fine,check both plugs for spark.Or it could be your CDI? EDIT..............even with those pipes your jetting is close,are the plugs oil fouling? Edited September 17, 2006 by Bill Quote Link to comment Share on other sites More sharing options...
fastLANE Posted September 17, 2006 Author Report Share Posted September 17, 2006 the left side is the one that misses. The plugs are not fouling cause I swapped in new plugs and it still did the same thing. How can it be the plugs, wires or cdi if I switched the plug wires from side to side and it still misses on the left side. This is realy puzzling me Quote Link to comment Share on other sites More sharing options...
Shee-Male Posted September 17, 2006 Report Share Posted September 17, 2006 Make sure you choke tube is connected, also be sure you didn't put the carb slides in backwards (this can happen is swaped from side to side), pull you reed cages and be sure the reeds are seated and not broken. I would also give the carbs a good cleaning while ya have it all apart and check the float hight . Good luck. Quote Link to comment Share on other sites More sharing options...
fastLANE Posted September 17, 2006 Author Report Share Posted September 17, 2006 Make sure you choke tube is connected, also be sure you didn't put the carb slides in backwards (this can happen is swaped from side to side), pull you reed cages and be sure the reeds are seated and not broken. I would also give the carbs a good cleaning while ya have it all apart and check the float hight . Good luck. choke tube is in place, slides are proper, carbs just got a fresh cleaning yesterday and 1 month ago along with the reeds during the rebuild. They looked fine. :baseball_wibble: Quote Link to comment Share on other sites More sharing options...
Shee-Male Posted September 17, 2006 Report Share Posted September 17, 2006 Do you still have the TORS?, maybee a bad coil. Quote Link to comment Share on other sites More sharing options...
fastLANE Posted September 17, 2006 Author Report Share Posted September 17, 2006 (edited) Do you still have the TORS?, maybee a bad coil. tors is deleted. How do i check the coil? Is it specific from side to side? Would it cause the bike to run the same when switching the plug wires? Edited September 17, 2006 by fastLANE Quote Link to comment Share on other sites More sharing options...
dajogejr Posted September 17, 2006 Report Share Posted September 17, 2006 Leak down test time... You've covered your basics... If swapping your plug wires didn't help...time to test the motor for a leak. PM Machwon on here for a good price on a sturdy and easy to use leakdown kit tester... Quote Link to comment Share on other sites More sharing options...
Bill Posted September 17, 2006 Report Share Posted September 17, 2006 Compression test,mabey that one side is hurt? Quote Link to comment Share on other sites More sharing options...
ZXShep Posted September 17, 2006 Report Share Posted September 17, 2006 After you got your cylinders bored and honed did you make sure your ports were chamfered so your piston rings wouldn`t snag on the ports? If they weren`t it could have bent or cracked your fresh rings. Sometimes a compression test won`t show a bent ring problem. So you will need to do a leakdown test or remove the head and cylinder to check. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted September 17, 2006 Report Share Posted September 17, 2006 Compression test,mabey that one side is hurt? First thing I thought..but, he said 135 per side...fresh bore. That's about perfect... Quote Link to comment Share on other sites More sharing options...
fastLANE Posted September 17, 2006 Author Report Share Posted September 17, 2006 The second side does fire, just not nearly as much as the "good" side. If you apply gas sometimes it will kick in and run great, than after a few seconds the left side will bog than run good, than bog,. I almost feel that is has something to do with throttle position. it looks and seems like the carbs are sinced and they open and close at the same time. what wil a leakdown test show me/ Nothing else is abnormal. No fluids are mixing with each other...does not spit and kinds of fluids...does not smoke from anywhere and no signs of leaks. The intake boots are also new and definatly dont have an air leak. :shoothead: Quote Link to comment Share on other sites More sharing options...
dajogejr Posted September 17, 2006 Report Share Posted September 17, 2006 IT will show you what you can't see with your eyes. It will pressurize the internals of the motor to test for bad gaskets, seals, etc. Crank seals are the biggest pain, since the cases have to be split. Not hard, just time consuming!! You may have an electrical problem...but until I knew my motor was sealed, you can spend a ton of money and headaches trying to fix a problem that isn't.... Quote Link to comment Share on other sites More sharing options...
LiftdT4R Posted September 17, 2006 Report Share Posted September 17, 2006 I was gonna say, do the leakdown test, I had a similar problem last year, and it was an air leak, due to the crank seals. Save yourself time, and aggrevation and do the leakdown test. Your jetting seems perfect, it's not that. Also, did you look, at the carbs, and clean them out? Could be dirt or something in the one, and the slide might be sticking closed. Just a though. LEAKDOWN TEST IT THOUGH. dajogejr, I like how you snuck in the new truck in the background of the banshee pic. Quote Link to comment Share on other sites More sharing options...
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