I'm having problems with my spark plug fouling on my QT50.
I have checked and cleaned the carb correctly and still have a problem with gas/oil fouling plugs. Bike starts and stalls within seconds with wet film on plug. I also replaced the ignition coil and cap and have blue spark but it seems somewhat weak. I tested compression and it's about 105psi... One problem that has me worried is the oil that is comming from the exhaust.... Ugh, Crank Seal???? I drained oil to see if the amount of oil comming from exhaust would be reduced. Didn't change a thing. I removed pipe from head and attempted to start the bike and no change. Start/Stall with a wet plug... No head/base gasket leaks... I still haven't checked the reed valve and I'm also going to relpace the needle in carb. I disconnected the oil injector and plugged openings, using a 32:1 premix. Going to try a new plug to see what happens... Any ideas??? Thanks! Mark