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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
RM 250 fouls up spark plugs-need advice
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[QUOTE="motometal, post: 752926, member: 24727"] been there, done that. my '96 was a plug fouling mother! Changed from Maxima Super M to el cheapo Suzuki oil and the problem all but went away. I've been told that since then, Maxima changed the formula of Super M? If the crank seal was leaking significantly, the bike would be blowing mega-smoke!the oil would be sucked into the crankcase on the intake stroke and then would mix with the charge, transfer up above the piston and try to burn. Could you just go to your dealer and pay them a bit to do a quick compression test? They would have the specs as well. Low compression means inefficient combustion, which can foul plugs. The float level could cause this. The bike would run blubbery off the bottom, and it would probably spew some gas out of the overflow tubes. You shouldn't see any fuel coming out of the tubes unless the bike is tipped quite a ways down. If it comes out when you just barely tip it, the level may be too high. Careful here, too low of a float level could be worse...the bike could starve for fuel when it needs it the most (wide open). How fresh is your fuel? Did the bike sit a while after your collision? If the fuel can't efficiently combust because it's stale, there will be increased spooge and possibly fouled plugs. Conversely, fresh race fuel can help keep things clean. It won't help much to clean the exhaust out now, I would wait until after your problem is resolved and clean it then...that way it will stay clean. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
RM 250 fouls up spark plugs-need advice
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