bansheemandan Posted May 20, 2011 Report Share Posted May 20, 2011 hi, i just bought my little brother a banshee, it runs fine at idle, but will backfire every once in a while, and has no top end power, it will rev up, but not the way it should, i belive it is electrical because i switched plug wires and now it seems to be doing it in the other cylinder, i pulled the stator cover and the whole timing plate was loose, i tightened it up and set the gap on the pickup to .020, the pickup does look like it was hit by the flywheel a few times, but it does still run, the woodruff key is good, i am kind of thinking it is the pickup or the coil, can you pros tell me what you think and how to check the electical parts,, thanks in advance Quote Link to comment Share on other sites More sharing options...
Phelps Posted May 20, 2011 Report Share Posted May 20, 2011 have you done a compression check? i would start there. every bike i have ever seen that didn't want to rev and backfired was due to a wounded cylinder or way way to rich on the jetting. Quote Link to comment Share on other sites More sharing options...
bansheemandan Posted May 20, 2011 Author Report Share Posted May 20, 2011 have you done a compression check? i would start there. every bike i have ever seen that didn't want to rev and backfired was due to a wounded cylinder or way way to rich on the jetting. yes it has 128 in each cylinder, it was doing it on the right side, i switched the plug wires and now it is doing it on the left side Quote Link to comment Share on other sites More sharing options...
Phelps Posted May 20, 2011 Report Share Posted May 20, 2011 yes it has 128 in each cylinder, it was doing it on the right side, i switched the plug wires and now it is doing it on the left side un screw the plug boot from the wire and cut 1/4 inch off and reinstall the boot. they get corroded and start misfiring. Quote Link to comment Share on other sites More sharing options...
bansheemandan Posted May 20, 2011 Author Report Share Posted May 20, 2011 un screw the plug boot from the wire and cut 1/4 inch off and reinstall the boot. they get corroded and start misfiring. thanks, i tried doing that but it is still the same, any other suggestions, my brother is driving me nuts and so is the banshee i am very greatfull for the help Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted May 20, 2011 Report Share Posted May 20, 2011 (edited) Try new plug caps with trimming wire. On my son's I pulled flywheel , cleaned rust off stator poles and lugs on outside, set gap to get rid of misfire.Also make sure grounds are clean and tite. Edited May 20, 2011 by Larry's Shee Quote Link to comment Share on other sites More sharing options...
Jereme6655 Posted May 20, 2011 Report Share Posted May 20, 2011 thanks, i tried doing that but it is still the same, any other suggestions, my brother is driving me nuts and so is the banshee i am very greatfull for the help what are the details about the bike? any power adders or anything on it? my 2001 would barely want to run on the right cylinder when you started into the throttle.....but at the 1/2 way point it would come to life and almost try and toss you off the bike. wound up being the guy never increased the size of the pilot jet for the fmf pipes he put on.....he increased the mains....but not the pilots. Quote Link to comment Share on other sites More sharing options...
bansheemandan Posted May 20, 2011 Author Report Share Posted May 20, 2011 what are the details about the bike? any power adders or anything on it? my 2001 would barely want to run on the right cylinder when you started into the throttle.....but at the 1/2 way point it would come to life and almost try and toss you off the bike. wound up being the guy never increased the size of the pilot jet for the fmf pipes he put on.....he increased the mains....but not the pilots. it is a electrical, not carbs, if i switch the plug wires from one size to the other it will do it in each cylinder Quote Link to comment Share on other sites More sharing options...
Jereme6655 Posted May 20, 2011 Report Share Posted May 20, 2011 it is a electrical, not carbs, if i switch the plug wires from one size to the other it will do it in each cylinder crap that's right....i forgot you mentioned that one haha....sorry you said your trigger probe got hit a few times by the flywheel right? i wonder if that has to do with it Quote Link to comment Share on other sites More sharing options...
bansheemandan Posted May 20, 2011 Author Report Share Posted May 20, 2011 crap that's right....i forgot you mentioned that one haha....sorry you said your trigger probe got hit a few times by the flywheel right? i wonder if that has to do with it i am starting to think that, do you know if and how there is any way to test it Quote Link to comment Share on other sites More sharing options...
thrill-billy85 Posted May 20, 2011 Report Share Posted May 20, 2011 (edited) hey man i had this same problem at one point. i replaced my coil under the tank, and problem solved. see if you can borrow one off a running bike and try that. its gotta be between the coil and spark plug if it switches sides like that. the coil is where it splits so if its segregated to one cylinder (plug/wire) thats gotta be it. Edited May 20, 2011 by thrill-billy85 Quote Link to comment Share on other sites More sharing options...
bansheemandan Posted May 20, 2011 Author Report Share Posted May 20, 2011 i tried a different stator and coil from a running bike, i still have the problem, can it be a bad cdi, i always thought that if a cdi is bad that i would not even run Quote Link to comment Share on other sites More sharing options...
Sneaky03 Posted May 22, 2011 Report Share Posted May 22, 2011 don't know if you checked yet but if the PARK BRAKE sticks it will not allow it to rev up don't know if it backfires but friend had problem with his and thats all it was. I am sure you can unplug the connection also if thats it so it don't happen again. Quote Link to comment Share on other sites More sharing options...
ban565 Posted May 22, 2011 Report Share Posted May 22, 2011 If the banshee is a 95 or newer it will not rev if the parking brake is not fully released. Also if there is to much play in your clutch lever it will not rev. Just something to check. Quote Link to comment Share on other sites More sharing options...
Smokestack Posted May 22, 2011 Report Share Posted May 22, 2011 Since you swapped those and same issue. I would say carb. Reeds or possible air leak. Quote Link to comment Share on other sites More sharing options...
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