Question about Suzuki RM 125 Motorcycles

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Rm125 power/starting problems

Hello every one out there iv got a good one for yea. Ive got a 1994 rm125 with a problem. first of all it has power problem it cant get in the band really in low gears, and it doesnt have the snap that a 125 2-stroke should have, hell im an 110 lb kid it should be able to wheelie for me. so I was riding it one day and the plug fouled on me, i replaced the plug then it would'nt start for me i bump started it and it fired up and then quit. i replaced the piston and ring, the piston had pinched the rings in the piston in one spot there was an indent right above the pinch, where it looked like the piston hit the power valve. so i got it all back together and it will only start when I bump start it even after its been running for awhile. It sounds good it revs good good but it doesnt seem to put out the power. Iv checked every thing sparks perfect, gasflows good, everything inthe carb, floats hights been adjusted to the right hight, timing is right. somebody PLEASE HELP ME!!!!!!

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Do a leak down test,and compression test,if your cyclinder is damaged you will have to bore it and replace your piston,and if you have an exhaust valve you may need to adjust or replace. check exhaust system could be clogged

Posted on Jul 03, 2009

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What should my comppresion be on a 1994 RM 125? And whats a leak down test?

Posted on Mar 21, 2010

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