Quote:
Originally Posted by Jake_reps337
Have you done a compression check? Oil being the cause of this problem is unlikely.
I'm guessing the engine is burning oil? (white smoke comes out the exhaust) the carburetor may have gotten some trash in it, causing it to run rich.. try some carburetor cleaner and see if that helps.
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Thanks for your reply. Compression is good, I'll try the carburetor cleaner (good idea). White smoke puff only after sitting for a week or more. Since I went back to conventional oil, no smoke. Still less than 300 miles on plug change, still running good, no misses. If you're right about oil not being the problem, then I guess I'm looking at new valve seals.
Randy