jjdawg336 Posted January 2, 2010 Report Share Posted January 2, 2010 Here's the problem: it arose after i was pushing a porto potty down the road (dont ask) then my quad died as if it ran out of gas. now, at idle one cylinder doesnt fire, when i begin to ride, immediately both pistons get stuck overreving, (the same as when a throttle is stuck open). the throttle is not open (i checked the carbs and both are closed) when this overreving happens the kill switch and key are disabled and dont shut the quad down. I think it might be the CDI or pickup coil or TORS system because of an article i was reading here on the site, the URL address is below. PLEASE HELP!!! http://www.dfn.com/benkaren/elecfaq.html Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted January 2, 2010 Report Share Posted January 2, 2010 haha, why the hell were you pushing a porta-pooper down the road? this scenario doesnt even make sense. how is the bike revving up if the both of the carb slides are down? no gas = no revs.. are you sure the slides are all the way down? have you checked to make sure there are no kinks in the throttle cable? Quote Link to comment Share on other sites More sharing options...
Building my First Posted January 2, 2010 Report Share Posted January 2, 2010 haha, why the hell were you pushing a porta-pooper down the road? this scenario doesnt even make sense. how is the bike revving up if the both of the carb slides are down? no gas = no revs.. are you sure the slides are all the way down? have you checked to make sure there are no kinks in the throttle cable? That is a weird one. NO Gas= NO Revs, I agree. I would have to say definitely a cdi issue, but your choke tube or something would have had to simultaneously fell off when the problem started. Quote Link to comment Share on other sites More sharing options...
Idontknowwhy Posted January 2, 2010 Report Share Posted January 2, 2010 I've had carb caps come loose and rev to the moon.. i dunno Quote Link to comment Share on other sites More sharing options...
No Limit Powersports Posted January 2, 2010 Report Share Posted January 2, 2010 There is nothing that the cdi can do to make the bike rev without throttle. You most likely have a air leak and the bike is lean sticking. Check all of your boots, intake bolts, carb top. And make 100% that the slides are not open. An easy way to find the leak will be a leak down test and if it a crank seal this might be the only way. You can spray ether on all of the connections and seals to see if the bike revs up but if it is already reving prolly not a good idea. Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted January 2, 2010 Report Share Posted January 2, 2010 instead of using starting fluid to make the bike rev up, use brake/parts cleaner. instead of making the bike rev up, when the parts cleaner seals up a hole, the idle will come back down. Quote Link to comment Share on other sites More sharing options...
Building my First Posted January 2, 2010 Report Share Posted January 2, 2010 There is nothing that the cdi can do to make the bike rev without throttle. You most likely have a air leak and the bike is lean sticking. Check all of your boots, intake bolts, carb top. And make 100% that the slides are not open. An easy way to find the leak will be a leak down test and if it a crank seal this might be the only way. You can spray ether on all of the connections and seals to see if the bike revs up but if it is already reving prolly not a good idea. I had a cdi problem once, same thing as he described. Not the overrev but misfiring at idle and the kill and key switch wouldn't work. The over rev will be an air leak, choke tube would do it. Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted January 2, 2010 Report Share Posted January 2, 2010 air leak or harness problem Quote Link to comment Share on other sites More sharing options...
No Limit Powersports Posted January 2, 2010 Report Share Posted January 2, 2010 I had a cdi problem once, same thing as he described. Not the overrev but misfiring at idle and the kill and key switch wouldn't work. The over rev will be an air leak, choke tube would do it. A faulty cdi can cause a lot of different issues but revving up is not one. The only thing that can cause free reving is too much air or too much air and fuel aka stuck throttle. The kill switch is ran threw the cdi so a shorted cdi could cause the kill not to work. That is why we hook our kill directly up to the coil to ground them out. Quote Link to comment Share on other sites More sharing options...
jjdawg336 Posted January 5, 2010 Author Report Share Posted January 5, 2010 Hey guys, Thanks for all your responses!!! I'm very new to 2 strokes and the terms of the banshee. My initial thoughts are I need to get a new/used CDI and install the bitch!!! I've had a blaster for years but nothing like this has ever come up! If you guys could be a bit more descriptive it would really help!!! Sorry for the troubles!!! If there is an air leak as you might suggest, between which two components do you think this leak is and how can I test to see if this is the problem? I really appreciate your input as I am a broke college kid trying to get by on ramon soup and BPR pounders!!! Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted January 6, 2010 Report Share Posted January 6, 2010 If I were a banshee and had to push a portapotty I'd act up too!!! Pull air boots and visually confirm that slides are BOTH fully closing. Check caps ontop of carbs, tite, also visually check carb boots. Quote Link to comment Share on other sites More sharing options...
jjdawg336 Posted January 7, 2010 Author Report Share Posted January 7, 2010 I took both carbs off and realized the only reason the choke tube is on connecting both carbs is because of the way it connects the two carbs, there is no snug fit it just sits on both choke carb nubs cuz its just wedged there... as soon as i take one carb off the tube just falls off both carbs, could this be the air leak you're all suggesting? if so i'll get a new choke tube and cdi and see what happens. anybody think it could be a coil giving me problems maybe in combination of an air leak and cdi issue? Quote Link to comment Share on other sites More sharing options...
fastbanshee8 Posted January 7, 2010 Report Share Posted January 7, 2010 Yes, the choke tube will cause an air leak, if it's missing, loose, or cracked. Replace the tube first, and see if that fixes the problem. From my past experiences, you have an air leak, that's causing it to rev to the moon. Quote Link to comment Share on other sites More sharing options...
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