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I just picked up another fiddy for 100 bucks off a friend cause he says the motor isi blown or something and its sat for the last 2 years. So Im gonna see if i can get this motor running if i can. I cleaned the carb new gas new oil and i am kicking it over it has compression new spark plug but when i checked the oil it looks like gas is making its way to the crankcase and mixing with the oil. So what would cause this bad rings or a gasket? The motor has an 88 kit on it. So what should be my next step when taking it apart or do they make a cheap rebuild kit for this?
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my guess is bad rings...but im no mechanic...just my .02
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anyone have any suggestions?
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If your getting alot of gas in the oil I would say its a carb issue. Carb is possibly flooding the cylinder which is causing gas in the crank case.
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anyone else ever see a problem like this?
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Check the float setting and needle and seat.
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There's a few things to consider. If it has good compression at room temperature, your rings probably aren't bad, but there might be some scoring on the cylinder walls. I can think of 3 places the fuel could get into the case:
1. past the rings
2. through the intake valve guide
3. through the head gasket between the cylinder and cam chain.
I'd start by checking the carb to see if it's flooding the cylinder by removing it from the bike while keeping the fuel line hooked up. hold it the same way it sits on the motor and turn the petcock on to see if fuel starts dumping out of it before you adjust anything. If that IS your problem, then start adjusting... if not, then move onto other possibilities.
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I got the carb off and it was all clogged up and I guess from sitting over years the gas corroded or something in it cause it was filled with a white powder. Jet needle everything was all clogged up. Got it all cleaned and got the motor to fire up. SO now I just gotta get it running better and see how it runs. But I got the motor to fire up so Im on a good start.
Originally Posted by BAKER