kingkong Posted March 10, 2009 Report Share Posted March 10, 2009 my 421 cheetah runs good while its cold after it warms up it starts banging out. i have jetted it up and jetted down and it still has a bad bang everytime it warms up. could it be my coil,cdi, or stator i dont know Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted March 10, 2009 Report Share Posted March 10, 2009 what do you mean a "bang." have you checked your plugs? Quote Link to comment Share on other sites More sharing options...
kawiking Posted March 10, 2009 Report Share Posted March 10, 2009 lol..whats a bang ? are ur plugs tight ? is it makin a tang tang tang.. noise. if so .. u better open it up . any metal coming out the exhaust ? Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted March 11, 2009 Report Share Posted March 11, 2009 When it gets worm will it rev to 1/2-3/4 then bang out it prob coil or caps,had similar situation last month on a cub Quote Link to comment Share on other sites More sharing options...
kingkong Posted March 11, 2009 Author Report Share Posted March 11, 2009 a bang is missing..runs fine till it warm up and will start popping then at 1/2 to full throttle..you can hear it sometimes only hitting on 1 side..1 side will be running fine and the other side will be popping..compression is fine and carbs have been cleaned several times.. plugs have been changed Quote Link to comment Share on other sites More sharing options...
Onesickcrewcab Posted March 13, 2009 Report Share Posted March 13, 2009 Have you done a leakdown test on it? Quote Link to comment Share on other sites More sharing options...
oneslowshee Posted March 18, 2009 Report Share Posted March 18, 2009 Have you done a leakdown test on it? i have a few questions not to steal the thread... waht is a leak down test and a squish clearence test.?? i have heard both of these terms and have no clue what they mean?> Quote Link to comment Share on other sites More sharing options...
firebanshee Posted March 19, 2009 Report Share Posted March 19, 2009 a bang is missing..runs fine till it warm up and will start popping then at 1/2 to full throttle..you can hear it sometimes only hitting on 1 side..1 side will be running fine and the other side will be popping..compression is fine and carbs have been cleaned several times.. plugs have been changed Check your spark plug boots, could have blown resistor. Quote Link to comment Share on other sites More sharing options...
tony cub Posted March 22, 2009 Report Share Posted March 22, 2009 i have a few questions not to steal the thread... waht is a leak down test and a squish clearence test.?? i have heard both of these terms and have no clue what they mean?> please use the search button on the top right..... Quote Link to comment Share on other sites More sharing options...
kingkong Posted March 23, 2009 Author Report Share Posted March 23, 2009 well i finally found why the cheetah been missing..after i have cleaned the carbs 10 times and changed plugs and run compression check i had just about gave up..i have a stock banshee frame in the back yard so i decided to try the coil off of it since i have done everything else..mounted this 5 r 6 year old coil on here and it runs like a 421 cheetah suppose to now..this thing will pull the wheels in 4th gear now..it has always had a lil miss every since i brought the bike but it slowly start getting worse..never thought it could be the coil cause it would hit sometimes on 1 cylinder like the carbs wer acting up then it would start back hitting on both cylinders..well while i was trying to find the problem i made a few oter changes..bumpd timing up from 4 to 7 and went from 93 octane to 104..it has a wheelie bar on it and will touch the wheelie bar in every gear now...also big shout out to jeff at f.a.s.t. i was gettin ready to buy an override cause this thing will not hardly shift...jeff told me the modded shift shaft will improve my shifting..this thing now shifts like it got an overide...so all you guys thinking bout buying an override i suggest you try the jeff's modded shift shaft Quote Link to comment Share on other sites More sharing options...
dajogejr Posted March 23, 2009 Report Share Posted March 23, 2009 ..this thing now shifts like it got an overide...so all you guys thinking bout buying an override i suggest you try the jeff's modded shift shaft Impossible. Glad you got the coil figured out. I've ridden modded bikes with shift mods, stars, Blaster rollers, Yakkey Shift drums, etc. Yes, they shift better than stock. Hell, anything does that's why they make so many things to help them shift better. You've either never ridden a bike on an override...or don't have the power needed for one. Anything shifts better than stock. NOTHING shifts like an override. It's physically impossible. If you're happy how it runs and shifts, that's the most important part. But saying it shifts like it has an override is false...there is nothing "like" an override, you can either bang shifts all day under full throttle or you can't. If you're telling me you can do EXACTLY that on your bike now, it'll break soon...promise. Quote Link to comment Share on other sites More sharing options...
kingkong Posted March 24, 2009 Author Report Share Posted March 24, 2009 Impossible. Glad you got the coil figured out. I've ridden modded bikes with shift mods, stars, Blaster rollers, Yakkey Shift drums, etc. Yes, they shift better than stock. Hell, anything does that's why they make so many things to help them shift better. You've either never ridden a bike on an override...or don't have the power needed for one. Anything shifts better than stock. NOTHING shifts like an override. It's physically impossible. If you're happy how it runs and shifts, that's the most important part. But saying it shifts like it has an override is false...there is nothing "like" an override, you can either bang shifts all day under full throttle or you can't. If you're telling me you can do EXACTLY that on your bike now, it'll break soon...promise. ok i might have over done it...it doesnt shift like an override...you do have to get off the gas to shift but it will shift...at first it wouldnt shift no matter what...guess i got a lil over excited since i been chasing gremlins with this thing every since i had it...the modded shift shaft do work but you will have to get off the gas...and yes it does hav the power Quote Link to comment Share on other sites More sharing options...
kawiking Posted March 24, 2009 Report Share Posted March 24, 2009 glad u figured ur problem out.. id still save up for a overide , atleast a dunable Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.