Skip2 MyLou Posted February 17, 2008 Report Share Posted February 17, 2008 Well fellas, I put up a couple posts before about how my banshee was backfiring from the right side only. I was told to clean the carbs. So yesterday, I took off the right carb, gave it a quick clean with some carb cleaner and a compressor. I put it back together. Now, the backfiring stopped, which was great, but the atv still can't idle without shutting off. Also powerband just isnt what it used to be, with a significant drop in power, to the point where i barely notice im hitting power band. I noticed it boggs out a little. Also i notice that the normal blue smoke comes out of the left side, with stronger exhaust pressure. However, the right side, which is the side thats giving me problems, has NO SMOKE, and the exhaust pressure coming out of the pipe isn't as strong as the left. It's very frustrating, and I can't figure out what it is. Any help would be appreciated. Quote Link to comment Share on other sites More sharing options...
2/2 many banshees Posted February 17, 2008 Report Share Posted February 17, 2008 Well fellas, I put up a couple posts before about how my banshee was backfiring from the right side only. I was told to clean the carbs. So yesterday, I took off the right carb, gave it a quick clean with some carb cleaner and a compressor. I put it back together. Now, the backfiring stopped, which was great, but the atv still can't idle without shutting off. Also powerband just isnt what it used to be, with a significant drop in power, to the point where i barely notice im hitting power band. I noticed it boggs out a little. Also i notice that the normal blue smoke comes out of the left side, with stronger exhaust pressure. However, the right side, which is the side thats giving me problems, has NO SMOKE, and the exhaust pressure coming out of the pipe isn't as strong as the left. It's very frustrating, and I can't figure out what it is. Any help would be appreciated. It sounds like only one side is firing do you till have the T.O.R.S. on ?? Quote Link to comment Share on other sites More sharing options...
XxMeltIcexX Posted February 17, 2008 Report Share Posted February 17, 2008 What do the plugs look like? Right side you said? - Crank seal could be going. But i'd expect smoke from tranny fluid. But you said when you cleaned the carb it stopped backfiring? - Sounds like carb issues, are these stock carbs? Are the carbs synced? Have you checked spark? Maybe Plug wires/coil going bad? Just a few ideas that popped in my head.. Someone else will chime in. Quote Link to comment Share on other sites More sharing options...
MILO Posted February 17, 2008 Report Share Posted February 17, 2008 hey bud, i know you don't want it to be this but you should check your piston out. pull off the carb and the reed cage and look into the cylinder to your piston. also pull the exhaust pipe and look in from that side also. mine had similar issues before and it ended up being a broken ring and seat and the debris flopped around on top of the piston and pretty much destroyed the dome in the stock head. the piston skirt was also cracked. i had pretty much the same symptoms. i started simple and brought it home and cleaned the carbs and fired it up. it didn't backfire as much but still ran the same. peeked in the cylinder and i had trouble. here's some pic's of the damage. Quote Link to comment Share on other sites More sharing options...
Skip2 MyLou Posted February 17, 2008 Author Report Share Posted February 17, 2008 It sounds like only one side is firing do you till have the T.O.R.S. on ?? Yep, Still have em on. Quote Link to comment Share on other sites More sharing options...
Skip2 MyLou Posted February 17, 2008 Author Report Share Posted February 17, 2008 What do the plugs look like? Right side you said? - Crank seal could be going. But i'd expect smoke from tranny fluid. But you said when you cleaned the carb it stopped backfiring? - Sounds like carb issues, are these stock carbs? Are the carbs synced? Have you checked spark? Maybe Plug wires/coil going bad? Just a few ideas that popped in my head.. Someone else will chime in. The carbs are stock. If it is the spark plugs, they went awfully quick. The bike is only about 6 months old, having been a brand new 06'. I haven't ran it hard or anything. So I dont know. The carbs should be synced, i havent even touched them, except for last night when i cleaned the right one. Quote Link to comment Share on other sites More sharing options...
350BANSHEE350 Posted February 17, 2008 Report Share Posted February 17, 2008 ill tell you right now get rid of the tors change the plugs and go from there Quote Link to comment Share on other sites More sharing options...
XxMeltIcexX Posted February 17, 2008 Report Share Posted February 17, 2008 Not the plugs, but to make sure youve got spark on the right cylinder. Ive had bad luck with coils, I never trust em anymore... The plug wire caps always have problems as well. Quote Link to comment Share on other sites More sharing options...
Skip2 MyLou Posted February 17, 2008 Author Report Share Posted February 17, 2008 hey bud, i know you don't want it to be this but you should check your piston out. pull off the carb and the reed cage and look into the cylinder to your piston. also pull the exhaust pipe and look in from that side also. mine had similar issues before and it ended up being a broken ring and seat and the debris flopped around on top of the piston and pretty much destroyed the dome in the stock head. the piston skirt was also cracked. i had pretty much the same symptoms. i started simple and brought it home and cleaned the carbs and fired it up. it didn't backfire as much but still ran the same. peeked in the cylinder and i had trouble. here's some pic's of the damage. wow bro, i really hope it isnt that. I'll check, but im praying its not something that serious. I wouldnt think something like that would happen to a bike thats only like 6 months old, but you never know. I'll check it out, let you know. Thanks man. Quote Link to comment Share on other sites More sharing options...
350BANSHEE350 Posted February 17, 2008 Report Share Posted February 17, 2008 ^ dont just go and rip it apart thats foolish, check the simple things first like spark etc if everything checks out there then remove the tors with the kit and get the carbs synced better because the tors dont allow that to happen very well then last take it apart Quote Link to comment Share on other sites More sharing options...
MILO Posted February 18, 2008 Report Share Posted February 18, 2008 ^ dont just go and rip it apart thats foolish, check the simple things first like spark etcif everything checks out there then remove the tors with the kit and get the carbs synced better because the tors dont allow that to happen very well then last take it apart the tors can just be unhooked and left on correct? i would try that b4 going out and buying the kit to get rid of them. and you should be able to get the carbs sync'd close enough with them on to make it run decent anyway. at least much better than what he's getting now. but if you can't figure it out with simple things first like clean carbs, spark, etc., don't rule out the possibility of internal damage just because it's not that old. and i'm not saying tear the top end down and inspect it just yet, just take a look thru the ports. they really aren't that difficult to get to. Quote Link to comment Share on other sites More sharing options...
Justintoxicated Posted February 19, 2008 Report Share Posted February 19, 2008 (edited) have you tried engauging and disengauging the parking brake 20-30 times? If the switch in the brake sticks even a little bit it will make the right side not fire (or maybe its the left...it's been a while since I removed mine). This is the only problem I have ever had witht he TORS system. Usualy it's the parking brake that needs to go, and you can unplug the rest after that. The elimination kit just makes the carb tops smaller. Check that the crossover tube is connected between the 2 carbs. Other than it's possible you might have changed some of the air-screws/idle screws or something? Check spark thats the easy stuff! Edited February 19, 2008 by Justintoxicated Quote Link to comment Share on other sites More sharing options...
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