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<blockquote data-quote="PawPaw" data-source="post: 184425" data-attributes="member: 1934">OK, the power valves are not the same thing as the reed valves. The power valve is an adjustable set of valves that alter the exhaust opening and thus port timing. If they are sticking due to dirt or sludge build up it will have a great effect on the power delivery.The black plug tells me you are either running rich, have low compression, a carb float valve set too high, a leaking float valve or possible a leaking crank seal on the clutch side.You really need to pick up a service manual for your bike as it will help with all of these possibilities.Go here and look under the engine tab at the exhaust valves.<a href="http://www.bikebandit.com/oem-parts/2007-suzuki-rm125/o/m10394#sch528107" target="_blank">http://www.bikebandit.com/oem-parts/2007-suzuki-rm125/o/m10394#sch528107</a>Do the other checks I have previously mentioned to get to rout cause of your problem.Paw Paw</blockquote>

[QUOTE="PawPaw, post: 184425, member: 1934"] OK, the power valves are not the same thing as the reed valves. The power valve is an adjustable set of valves that alter the exhaust opening and thus port timing. If they are sticking due to dirt or sludge build up it will have a great effect on the power delivery. The black plug tells me you are either running rich, have low compression, a carb float valve set too high, a leaking float valve or possible a leaking crank seal on the clutch side. You really need to pick up a service manual for your bike as it will help with all of these possibilities. Go here and look under the engine tab at the exhaust valves. [URL]http://www.bikebandit.com/oem-parts/2007-suzuki-rm125/o/m10394#sch528107[/URL] Do the other checks I have previously mentioned to get to rout cause of your problem. Paw Paw [/QUOTE]

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