Quote:
Originally Posted by stainlesscycle
whoa - just noticed this one. the choke has no effect? is the rubber bumper on the bottom of the choke assembly ok?
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Bow chicka bow wow!! This would definately result in a super rich condition across the board. By bike does't even like to rev well under choke though. I'd definately check this. $13 part and easy as pie to pull out. If its questionable you could run some grease around the seal and see if it runs better breifly.
I doubt that the rings would be shagged.. I think 0.8mm is out of spec for a 300. 0.4mm is ideal. You would expect to see some blow by as well. The main reason that I thought along these lines is that you said its progressively been getting worse. Usually a good sign of a part wearing as opposed to something broken.