chaos1488 Posted August 31, 2009 Report Posted August 31, 2009 today when i started my banshee it started to rev as if wide open without my help and i had to rip a carb off to get it to quit..ive heard of this so i knew what to do to get it to stop, but why the hell would it do this?...was one or both of my carbs not getting any fuel and running off what was was left in the bowls? Quote
sheefreak Posted August 31, 2009 Report Posted August 31, 2009 today when i started my banshee it started to rev as if wide open without my help and i had to rip a carb off to get it to quit..ive heard of this so i knew what to do to get it to stop, but why the hell would it do this?...was one or both of my carbs not getting any fuel and running off what was was left in the bowls? A lean condition is causing this. You are somehow lean on the needle or possibly the pilot ckt. Check your slides and sync. I have had my adjusters at the tops of the carbs come loose and cause this. Where is the clip at on the needles? Could be an air leak. Need to check all these things. And if it happens again, hold the brake and dump the clutch, it will shut her down. Quote
chaos1488 Posted August 31, 2009 Author Report Posted August 31, 2009 A lean condition is causing this. You are somehow lean on the needle or possibly the pilot ckt. Check your slides and sync. I have had my adjusters at the tops of the carbs come loose and cause this. Where is the clip at on the needles? Could be an air leak. Need to check all these things. And if it happens again, hold the brake and dump the clutch, it will shut her down. I replaced my fuel lines and checked the sync in my carbs..it did not do this until the methanol rotted the lines. new lines.. carbs in sync ..carb caps screwed down...started her up and she idled real nice so when i hit the kill she kept running and then revd like a bitch again till i pulled the carb off. i have a trip planned for the weekend and dont wanna blow her up. this is driving me nuts. Quote
sheefreak Posted August 31, 2009 Report Posted August 31, 2009 I replaced my fuel lines and checked the sync in my carbs..it did not do this until the methanol rotted the lines. new lines.. carbs in sync ..carb caps screwed down...started her up and she idled real nice so when i hit the kill she kept running and then revd like a bitch again till i pulled the carb off. i have a trip planned for the weekend and dont wanna blow her up. this is driving me nuts. I am suprised she idled real nice. My guess would be you have particles of fuel line clogging your pilots causing it to be lean. But it really should have never idled well.... Quote
sleeper06 Posted August 31, 2009 Report Posted August 31, 2009 Maybe the meth rotted your crank seal or another rubber piece causing an air leak causing you to deisel the motor Quote
chaos1488 Posted September 1, 2009 Author Report Posted September 1, 2009 sheefreak..so you were right..and after talking to greg at wcr i tore the carbs apart and lo and behold there was a chunk of rubber in a float bowl..i disassembled both piece by piece and cleaned them up. after tuning them and syncing them i put her back together and she fired up nice and sweet. no more choke style rev either..which was a prob i was sometimes experiencing. the gives me that nice crisp zing when i rev her up and sounds so viscious...thanks for all your input.cant wait to go shoot "hundred dollar hill" at the cinders in northern az this weekend.thx again Quote
chaos1488 Posted September 1, 2009 Author Report Posted September 1, 2009 Maybe the meth rotted your crank seal or another rubber piece causing an air leak causing you to deisel the motor thx for the input bro..tore apart the carbs and cleaned em up piece by piece...good to go now. Quote
sheefreak Posted September 1, 2009 Report Posted September 1, 2009 Glad to hear you got it bro Have fun this weekend. Quote
chaos1488 Posted September 1, 2009 Author Report Posted September 1, 2009 Glad to hear you got it bro Have fun this weekend. no doubt...gonna have some pics and vids ill upload when i get back for sure Quote
dajogejr Posted September 10, 2009 Report Posted September 10, 2009 I know this is easy to say, but hard to practice...but if a methanol bike runs off on you the best thing to do is pull the clutch, upshift as many gears as you can, STAND on the brake(s) and floor it then dump the clutch to kill the motor. Quote
kawiking Posted September 12, 2009 Report Posted September 12, 2009 I know this is easy to say, but hard to practice...but if a methanol bike runs off on you the best thing to do is pull the clutch, upshift as many gears as you can, STAND on the brake(s) and floor it then dump the clutch to kill the motor. good info , dave... i had that prob on my alky cub last yr... cable pulled out of the top of the carb, pulled my kill switch , then had to pull my spark plug cables. would that be hard on a overide doin that dave. or not, since ur sitting still . Quote
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