DraveN Posted January 4, 2007 Report Posted January 4, 2007 Before i get started i just wanna say this bike is my first 2-stroke quad ever and i'm not a pro at it so any help is appreciated. I just rebuilt my 93 shee new crank, clutch, pistons, jugs, gaskets...everything. I get it all done but then it won't run. So my brother and i clean out the carbs (boy were they dirty) one at a time so we don't get anything mixed up between the two. Put them back on and still nothing. Today we went out and got some new spark plugs and fresh gas/oil. I mixed the gas at a 36;1 ratio (what do you guys run?) and tried to start it. Final solution step dad said was try a little either. It started up and ran for a while but then began 2 back fire a little bit and sparks came out of the right exhaust. The bike will not start cold has to use a tad bit of either which i do not like doing because obviously its now how its suppose to be running, i don't wanna rely on it i want it fixed right know what i mean? Anyways once the bike is warmed up and let sit for say 5 minutes she will start up 2nd or 2rd kick but still backfires. I decided to take it for a spin up the street (popping all the way) and came back. My brother said that the popping was not good and to let it sit for now since he had to run. I have asked a few friends and have gotten responses such as "running to lean" the air and gas ratio, "holes or air leak" and even "wrong size jets" . When i first got this bike (before it got blown up) it ran fine so im assuming the jet size is right but maybe failing do to something i did wrong... carbs.... running to lean.... what ?!?! Quote
bansheeseat$$ Posted January 4, 2007 Report Posted January 4, 2007 Did you put the choke cross over hose back in?Also slides in the correct way? Also hate to say it but did you put the pistons in backwards? Quote
DraveN Posted January 4, 2007 Author Report Posted January 4, 2007 Did you put the choke cross over hose back in?Also slides in the correct way?Also hate to say it but did you put the pistons in backwards? Yes, Yes, and..... rofl yes I'm thinking maybe its running to lean but still if anyone knows or any ideas i do appreciate it! Quote
bansheeseat$$ Posted January 4, 2007 Report Posted January 4, 2007 Yes, Yes, and..... rofl yes I'm thinking maybe its running to lean but still if anyone knows or any ideas i do appreciate it! Sorry but you would be suprized how many I get that have them in backwards. I guess next would be to list what mains,pilots and needle positon you have now.Also make sure you don't have a air leak.IE=base gaskets intake gaskets crank seal either side and do a compression test. Really you need to do a engine pressure test on it to verify leaks though. Quote
Animalman294 Posted January 4, 2007 Report Posted January 4, 2007 Sounds like an air leak. You may also take that ether and when you get it started spray it around the intake, base of the cylender's, tops of the carbs (you'd be surprised about how many people put the caps back on and don't seat the caps right causing a leak). If the engine rev's up temporarily you found your leak. Also spray it around your spark plugs just to make sure there are no leaks there.......... :thumbsup: Quote
DraveN Posted January 4, 2007 Author Report Posted January 4, 2007 (edited) Sorry but you would be suprized how many I get that have them in backwards.I guess next would be to list what mains,pilots and needle positon you have now.Also make sure you don't have a air leak.IE=base gaskets intake gaskets crank seal either side and do a compression test. Really you need to do a engine pressure test on it to verify leaks though. Yea i'm gona say stock carbs for this not sure really. Like i said i am no expert but i can find out and thanks for help. Sounds like an air leak. You may also take that ether and when you get it started spray it around the intake, base of the cylender's, tops of the carbs (you'd be surprised about how many people put the caps back on and don't seat the caps right causing a leak). If the engine rev's up temporarily you found your leak. Also spray it around your spark plugs just to make sure there are no leaks there.......... :thumbsup: Yea thats a good idea. Since its kinda late ill probably goto bed here shortly and wake up early to look at it since i am almost certain is a air leak or on those lines. Thanks EDIT: By caps you mean caps on the carbs right? :x Edited January 4, 2007 by DraveN Quote
sheefreak Posted January 4, 2007 Report Posted January 4, 2007 Is it possible that the reason it blew up in the first place is because it was lean? You may have cleaned your carbs, but sounds like you didn't clean the pilots well. The pilots need to be taken out and compressed air run through them. Did you do this? This would cause a lean condition once you get it to start and will pop and crack at idle. As mentioned above, you need to take the carbs back apart, find out what you have for jets, and clean those pilots! They are so small it doesn't take much to clog them up. Also did you do any mods that would affect airflow when you rebuilt. Did it start easy before you blew it. Quote
bansheesmoke Posted January 6, 2007 Report Posted January 6, 2007 Is it possible that the reason it blew up in the first place is because it was lean? You may have cleaned your carbs, but sounds like you didn't clean the pilots well. The pilots need to be taken out and compressed air run through them. Did you do this? This would cause a lean condition once you get it to start and will pop and crack at idle. As mentioned above, you need to take the carbs back apart, find out what you have for jets, and clean those pilots! They are so small it doesn't take much to clog them up. Also did you do any mods that would affect airflow when you rebuilt. Did it start easy before you blew it. there is 3 things that i kno of and seen that make a banshee do that. 1 dirty carbs and airfilter. 2 sheared flywheel key. 3 bad stator. possibly and airleak Quote
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