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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
1990 RM 250 maintanence
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[QUOTE="txkawboy, post: 698892, member: 48628"] whoops, sorry mud, forgot your other q's: 1. if the smoke is blue/bluish, then it is running too rich at that particular moment. 2. if the smoke is truly white, then u may have a bad rt hand crank seal. 3. so, before confusing u wit hdiagnosing a bad seal, try this: buy some bel-ray mc-1, and mix it according to the directions (50:1). ride your bike and see if this helps. if so, u r on the right track. your jetting is apparently off, given all other variables are ok (clean air filter, fresh gas, etc.) At this point you will need advice from a local pro at your track, or better yet eric's book. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
1990 RM 250 maintanence
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