Hello all, recently picked up a cheap '92 Yamaha Beluga xc125 four stroke under the impression the only problem was a lack of spark. Playing with it this evening realised there was petrol/oil leaking everywhere and tracked it down to the back of the carb! There's compression and the bottom end is getting pressurized. I'm going to get the head off to check valves, piston, rings etc but any other ideas about what might be the problem?
Cheers,
Joe
Yam 125 4t gushing oil through air box!
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ForemanBob
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Might be a breather tube running from the crank case into the air-box... check it's not blocked?