LT80 problems

[Bandit]

I have been working on this quad for a buddy. When he brought it over it didnt run. Well removed the carb and cleaned well...then changed the o-rings and changed the spark plug. After all that i put it back together and hit the starter. It started up after cranking a while and ran for about 5 min. and then bogged and died. And wouldnt restart.I cranked for a while and it kinda speeds up like it gonna start but just wont. I let it set for awhile and bam it started agian..and then the same thing, after about 5 min. of running it just boggs and dies.

I did a compression check and got 125, so im ok there.

But i did notice a lot of oil on top of head. I cleaned it off and when i ran it till it died i noticed that all that oil was back. Could i have a blown head gasket?

[mywifeknowseverythin]

IF you did a Compression Check and Got 125 then you dont have a Blown Gasket...It would have leaked Down...Im not Familiar with the Quads....But does it have a Vented Gas Cap???? Have you tried to run it without the Cap on??? What happens is Pressure builds up and Stops the Fuel from Flowing.....is the LT80 2 Stroke???

[Bandit]

yes its a 2-stroke, and the gas cap might be a good idea cause the fuel petcock is ran from the vacuum of the carb. But i still dont know where all the oil is comming from.

[mywifeknowseverythin]

Where Exactly is the Oil Spewing from????? At the Pipe.....????? What mix does that little Guy take??? Leaner the Meaner:cool: Is it Oil injected???? If so,,,,GET RID OF THAT SYSTEM!!!! I never Trusted those....

[Ajmboy]

Did you find the fix for this? Any luck?

[Bandit]

Going to fix this weekend...It has a bad crankshaft seal. The oil is comming from behind the flywheel.

[23chanz]

I had a problem with my sons LT80 similar to this I had to hit the starter to work with a hammer, but I bought a new solenoid and starter from RareElectrical.com Alternators ATV Starters Chrome Units Generators Inboard Starters Jet Ski Starters Lawn Garden Mini. Was really really good price and fast shipping.

[Bandit]

What it ended up being was the crank seal poped out.

[DirtDemon]

does it run ok now? Wish I would have read this sooner, cause I was going to say you had a crankcase leak, but as I read on I saw that you already had figured it out.