Question about 2003 Suzuki RM 250

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It back fires when i try to start it

I replaced the reed valves,spark plug and cleened the carby out after it just died, it went 4 a half hour & ended with a back fire. now when i try 2 start it she back fires & the oil looks milky how do i fix it?

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It sounds like you have a valve not seating properly,allowing fuel to ignite in the exhaust, or possibly a bent valve stem allowing fuel to get into the oil. Just to be sure ,i would advise checking your head gasket.

Posted on Jul 22, 2009

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