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Message: [QUOTE="76GMC1500, post: 1192112, member: 73139"] Does it smoke when you run it hard or does it smoke when you're putting around? 2-strokes do get kind of smokey if you putt them around a lot. Then, they really smoke when you go full throttle after putting around a lot. Between 32:1 and 40:1, you're not going to see much of a difference in the amount of smoke you make. Even at 20:1, the bike should make reasonable amounts of smoke. The type of oil does. Amsoil Interceptor is, by far, the least smokey oil I have run, followed up by Redline and Bel Ray HC-1 in 3rd. It's hard for me to tell you what is wrong with your bike without taking a look at it and watching you ride. How much smoke is excessive? Are you noticing any loss of coolant or transmission oil? How do your carb settings compare to stock? What kind of numbers are you getting from a compression test? How does your plug read? I have a friend with an 88 KX 250. That bike smoked so bad it would make you cry if you stood behind it while it was running. It smoked because the slide in the carb was worn out and letting air leak by. We compensated by installing a larger (richer) pilot jet and raising the throttle needle (richer) one position from stock. We had to do this or the engine rev out of control and not return to idle. The bike ran great afterwards, it just smoked a lot at idle. [/QUOTE]