Question about 2003 Suzuki RM 250

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RM250 Power Issues

I have a 2003 RM 250, recently put a new Wiseco Piston in at Suzuki. When the bike idles the revs sound restricted and does not rev correctly, it slowly stalls. When riding and in 1st and i stop it dies. When im riding the power and revs feel stuttery and staggered untill the powerband kicks in, then it seems to be ok and comes alive - but i still get dropped by a WR450 like no tomorrow. but the lower end and mid range power is very rocky. there is no smooth power delivery. the premix is incorrect as well as it sputs oils out the exhaust, but will the premix cause the above?

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Hello if your motorcycle is blowing a lot of smoke and oil from the exhaust and running poorly,sounds like you have worn crankshaft bearings or the main seal is bad and sucking transmission oil.

Posted on Jun 08, 2010

  • djdiangelis Feb 16, 2011

    Another problem could also be the power/exhaust valve. if a stop pin was broken or lost the valve may be stuck open. this gives hardly and power until the powerband where it is meant to be opened up



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