finaltouch Posted June 27, 2006 Report Share Posted June 27, 2006 I have searched and done alot of reading, but still havent figured out the problem. I just bought a 2000 banshee a couple weeks ago. initially it worked great, then the last trip out the throttle stuck about half way, and it would pulse hard. I tried to limp it home, and ran out of gas about 5 min from home. I took the carbs apart to find that one had the top tors peice loose, and it had gotten dirty enough to make it stick. I cleaned this carb, then looked at the other one, and cleaned it at the same time. I put it all back together, and it wouldnt start, so I pulled it with my other wheeler. I could get it to start but wouldnt run well. so I checked the plugs, great fire, . when it is running, the left pipe has hot exhaust, and the right is cool. I also swapped the plug wires same . left is hot, right is cool. It seems to me that i am getting fire, but the right side is backfiring, and barely burning as the exhaust is really cool I have now taken the carbs of 3 time to try to clean them with no change. any ideas on where I should look next? Quote Link to comment Share on other sites More sharing options...
easyrider470 Posted June 27, 2006 Report Share Posted June 27, 2006 AHHHH yes....the one cylinder firing issue. How long had the bike been sitting before you got it? if it had been sitting for a while then check and see if you are even getting fuel flow to the right side carb......pull off the fuel line where it goes into the carb.......flip on the fuel in main and see if it flows.....the bike does not need to be running just see if you got flow.....if not then flip it to reserve and see what you have......it takes fuel air and spark to make it all happen....make sure you got all three first then we'll dig deeper........good luck let me know what you find out. :beer: :beer: Quote Link to comment Share on other sites More sharing options...
ScrewMachine Posted June 27, 2006 Report Share Posted June 27, 2006 I think what I got out of your story is that one of the carb tops came loose and dirt got inside, causing the throttle to stick? If so, that side of the engine was running lean when the carb top came loose. What happened next is not good. Check the compression on both sides and post back with the results. Right side may be burned up. Hope I'm wrong........... Quote Link to comment Share on other sites More sharing options...
Somics350 Posted June 27, 2006 Report Share Posted June 27, 2006 AHHHH yes....the one cylinder firing issue. How long had the bike been sitting before you got it? if it had been sitting for a while then check and see if you are even getting fuel flow to the right side carb......pull off the fuel line where it goes into the carb.......flip on the fuel in main and see if it flows.....the bike does not need to be running just see if you got flow.....if not then flip it to reserve and see what you have......it takes fuel air and spark to make it all happen....make sure you got all three first then we'll dig deeper........good luck let me know what you find out. :beer: :beer: ya when i was putting on my pipes, that shit happened to me. i checked my carbs, and reeds, and everything. it turned out that some stuff was just alittle disconnected.. so make sure everything is securely connected. :yelrotflmao: Quote Link to comment Share on other sites More sharing options...
jankab Posted June 27, 2006 Report Share Posted June 27, 2006 I have searched and done alot of reading, but still havent figured out the problem. I just bought a 2000 banshee a couple weeks ago. initially it worked great, then the last trip out the throttle stuck about half way, and it would pulse hard. I tried to limp it home, and ran out of gas about 5 min from home. I took the carbs apart to find that one had the top tors peice loose, and it had gotten dirty enough to make it stick. I cleaned this carb, then looked at the other one, and cleaned it at the same time. I put it all back together, and it wouldnt start, so I pulled it with my other wheeler. I could get it to start but wouldnt run well. so I checked the plugs, great fire, . when it is running, the left pipe has hot exhaust, and the right is cool. I also swapped the plug wires same . left is hot, right is cool. It seems to me that i am getting fire, but the right side is backfiring, and barely burning as the exhaust is really cool I have now taken the carbs of 3 time to try to clean them with no change. any ideas on where I should look next? Throw that TORS in the trash and get a elimator kit http://www.vitosperformance.com/atv_parts/...&cat=372&page=1 Quote Link to comment Share on other sites More sharing options...
finaltouch Posted June 27, 2006 Author Report Share Posted June 27, 2006 Throw that TORS in the trash and get a elimator kit http://www.vitosperformance.com/atv_parts/...&cat=372&page=1 just want to get it to run right first. checked the compression, and it is 30psi in the right side, and 70 psi in the left Quote Link to comment Share on other sites More sharing options...
jankab Posted June 27, 2006 Report Share Posted June 27, 2006 just want to get it to run right first. checked the compression, and it is 30psi in the right side, and 70 psi in the left The Tors can cause issues with the quad running correctly, that's why I say get rid of it Quote Link to comment Share on other sites More sharing options...
pipebomb Posted June 27, 2006 Report Share Posted June 27, 2006 did you make sure to turn the fuel off and hole the throttle wide open and kick it several times til the gauge stopped climbing?? If so you need a topend rebuild BADLY, cause you you should be at least around 120-125 psi in each. Quote Link to comment Share on other sites More sharing options...
J-Madd Posted June 27, 2006 Report Share Posted June 27, 2006 just want to get it to run right first. checked the compression, and it is 30psi in the right side, and 70 psi in the left :baseball_bat: WHOA!! I'm surprised it'll even try to start with compression that low. Did you hold the throttle wide open and kick it until the gauge stopped moving? Time for a rebuild. did you make sure to turn the fuel off and hole the throttle wide open and kick it several times til the gauge stopped climbing?? If so you need a topend rebuild BADLY, cause you you should be at least around 120-125 psi in each. Ya beat me to it! Quote Link to comment Share on other sites More sharing options...
finaltouch Posted June 28, 2006 Author Report Share Posted June 28, 2006 well heres the problems that I found so far first when I pulled the head off it looked like some severe detonation on both the head and the piston, but when I pulled the cyclinder off it was clear that the top ring somehow got chewed up , so i need a new piston for that side. the sleeve miracously did not suffer too much, but the head is probably toast. heres some pics of the damage also the top ring on the left piston was pretty seized in place, and I broke it trying to free it up \ so what suggestions do you have as far as replacement parts, or better parts. might as well do it ring the first time Quote Link to comment Share on other sites More sharing options...
bansheerage Posted June 28, 2006 Report Share Posted June 28, 2006 Well there looks like you have a problem heh heh !!! You said (looks like i need a piston on that side) Correction my friend you need both pistons and all new rings. Just go ahead and buy a whole new set gaskets and all. About the cylinders? I couldnt tell you if you need to hone/hon (spelling?) but from the looks of it you probably do now. And if you got the cash then hell just buy a new head like a cool head or something like that. Im not to good with the head thing. hope this helps a lil bit Quote Link to comment Share on other sites More sharing options...
ohiobanshee Posted June 28, 2006 Report Share Posted June 28, 2006 when your carb top came lose it could have caused the right side to leanout that would have melted your piston Quote Link to comment Share on other sites More sharing options...
ScrewMachine Posted June 29, 2006 Report Share Posted June 29, 2006 Look at the carbon patch on top of the piston...it reaches all the way to the edge on both. Tells me that both sides were running too lean. Don't take this as argumentative, but with that kind of damage to the piston, I'm having a really hard time believing that the cylinders aren't fuct. Weisco is probably the best bet for piston replacement. Check around with some local shops and have the cylinders inspected. The head doesn't look THAT bad, buy if ya need a cheap replacement head lemme know, I think I've got one laying around the garage here somewhere. Or, go with a cool head if ya got the dough. When ya get it back together, check your jetting and check for air leaks. Don't want to fry it again.... Quote Link to comment Share on other sites More sharing options...
finaltouch Posted June 30, 2006 Author Report Share Posted June 30, 2006 took the cyclinders to yamaha to be inspected, and then to an engine builder to be honed, they both said it was fine Quote Link to comment Share on other sites More sharing options...
dajogejr Posted June 30, 2006 Report Share Posted June 30, 2006 If you don't want to risk running that knicked up head, I have a 100% perfect used head off my 96 I will gladly let you steal for 20 bucks, shipped. it's just sitting in my garage, on my tool box. I even scotchbrited the gasket surface...ready to bold on. PM me if you'd like it... I have no use for it and would like to see it go to use for someone in need... Quote Link to comment Share on other sites More sharing options...
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