...two stroke oil, mixed to the proper ratio, in the fuel. Also make sure the air filter is not excessively soiled. With all of the above confirmed and corrected, start the bike and run until the ...
...excess oil. I recomend a proper air filter oil(from a motorcycle shop) but don't recomend the "no toil brand" of airfilter oil unless you clean it out after every race( if you race your bike),grease ...
...on mid to late 90's Yamaha) it is a 2 stroke so fuel air mix runs through the crankcase anyway but, excessive amounts are usually caused by a stuck needle valve in the carb. If it is getting into the ...
...(is there any sign of fuel oil weeping from behind magneto? Are the conrod and crank pins okay? (excessive piston side play or up down freeplay) Is your ignition providing a healthy spark? (coil ...
Question about 2003 YZ 125
...What is causing the fouling? Engine oil? On a two cycle dirt bike, the fouling can be caused by excessive oil in fuel mix. I believe 50 to 1 is the correct ratio yet you may want to cut back, a ...
...excess fuel in the cylinder? With spark plug removed, any excess fuel should be expelled out the open spark plug hole. CAUTION: INSURE THAT THE SPARK PLUG LEAD IS DISCONNECTED, AND HELD AWAY FROM THE ...
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