first trike! carb problems

[whodeycincy]

Totally rebuilt this engine, new rings, piston , i bye passed oil injector . it wants to fire but i know its my carb settings, any one know where i should set the air and throttle set screws? is the choke realy important to get it started ? because its just a 3 inch cable and hard to hold while pull starting,,,, srry its a yamaha yt 175

[whodeycincy]

also i mixed oil 12.8 oz to 2 gal, is that to heavy for it to fire? it back fires

[MonroeMike]

Carb settings can be found here.
http://www.3wheelerworld.com/showthread.php?126386-YT125-175-Service-Data

[dougspcs]

Backfire on 2 stroke is a sign of lean condition..choke could totally be your issue. She's telling your she needs more fuel!!

[just ben]

thats alot of oil. to much oil causes a lean fuel to air ratio. my old yt always needed to be choked when cold. get a helper to hold it or pull the cable and clamp it with vise grips

[whodeycincy]

iam thinking oil should be 30:1? any body know how many ozs per gal that is? and if i bypassed the oil injector would theses set screws that adjust throttl and idle lean even be used? ugg should of just kept oil injector hooked up ! lol

[250rRoostmaster]

You need to look at your specific brand of oil that your using... It will have the mix ratios right on the bottle......

[whodeycincy]

it stopped at 40:1 small 3.2 oz bottles,quaker state

[Thorpe]

That probably was 1 bottle of oil for a 1 gallon of gas... I hope you premixed that 12+ ounces to 4+ gallons!

[whodeycincy]

40:1 is 3.2oz to 1 gal , 32:1 is 4oz per gal...so i should of used 4.2 oz per gal for 30:1 sound right? so i should of used just a few oz,s over three gallons of gas?

[Thorpe]

Your math looks pretty good to me... Is your sparkplug new?

[whodeycincy]

after i cleaned the old one i got more response, but yes i did buy a new one, but spark looked kinda weak, then again when was the last time i looked at a small engine ? never lol, it was running when i took it apart, was getting gas in crank case, got a different crank case and trans new gasket set,trans is from a yt125, but i bet its my oil to lean now that you all helped me think about it,i mean its 4.2 ozs of oil to thick! lol

[whodeycincy]

meant bottom end

[whodeycincy]

trans is right year83 yt175,clutch i had to get from a 83yt125, the175 uses a rare spacer plate in clutch pack that i couldnt find anywhere,

[just ben]

after i cleaned the old one i got more response, but yes i did buy a new one, but spark looked kinda weak, then again when was the last time i looked at a small engine ? never lol, it was running when i took it apart, was getting gas in crank case, got a different crank case and trans new gasket set,trans is from a yt125, but i bet its my oil to lean now that you all helped me think about it,i mean its 4.2 ozs of oil to thick! lol

its a 2 stroke its suppose to get gas in the bottom end

[Vealmonkey]

Do you have an air filter on the trike while trying to start it? If you don't have an airfilter or are using anything other than the stock airbox, you have a lean condition. Beware starting your trike or it may death rev, meaning run away with a lean condition. Be prepared to pull the spark plug wire if it starts and revs out of control. Make sure carb slide works normally inside the carb and closes all the way while the thumb throttle isn't being pushed. Make sure throttle cable doesn't hang up. Make sure you have gas going into the carb. Try a small shot of starting fluid in the carb and see if it fires. Not much either mind you as it can be bad for a 2 stroke engine as it cleans the oil out of the top end. Keep a fire extinguisher handy!!!! If it does decide to fire and backfires on you, well, can shoot flaming gas out of your carb. Don't ask me how I know this! LOL

[whodeycincy]

no when i drained the trans oil {clutch pack) there was gas in that

[whodeycincy]

After i added the extra gallon of gas to the mix it sounded better, real late so didn't try to hard , also sounds like ill be using jack stands on the rear end! also i have a real short starter cord, sundays another day

[just ben]

After i added the extra gallon of gas to the mix it sounded better, real late so didn't try to hard , also sounds like ill be using jack stands on the rear end! also i have a real short starter cord, sundays another day

well a short cord can be a big problem in itself. call you buddies (probably need two or one good strong one) or push it a steep hill. then push staet it!

[whodeycincy]

lol got a nice lil steep hill ,tried it but not since the gas change, i know once i get it started itll be fine after that,I PUT IT IN 4 GREAR motor was kinda bangin hard when i went down hill

[whodeycincy]

theres a hose nozzle on the back and right side of carb ,any one know what those go to? should i have em capped off? i already caped off the oil inlet into intake, on bike bandit they show metal tubes? 1983 yt175 #23 #24

[whodeycincy]

ahhh just got an online tear down book looks like i didnt hook up the pulse tube for the fuel pump!! its supposed to go to the carb joint? is that the intake?

[whodeycincy]

got it running twice! than pull rope broke!!! lol gota love it

[whodeycincy]

uggg cant keep this trike running!!! push start it and will run till i hit gas or pop back into neutral or not moving it dies?! found a oil seal hole in bottom of air box with no oil seal so guess thats next on the list! could use any more feed back