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Message: [QUOTE="kwiktsi, post: 1010479, member: 66465"] Hey guys/girls- I just picked up a 94 RM 125 last night that I thought just needed a good tune up, however, the problem seems to be much worse. I have not touched a dirt bike since 88, so the tech has changed some and I need to ask those who know more than I :). Basically the problem the bike has is it does not want to pull into powerband. It gets up to that point pretty well, then just stops- like a bog or something. Even in neutral, it will not rev past a certain point. Now the details- the bike has a newer piston and jug (previous owner) and has 120 psi of compression. I went through the carb and it is all cleaned up. Upon further inspection, I noticed the rod that attaches to the powervalve linkage and goes down into the crank case was disconnected in the case, so I tore it down and hooked it all back up. Still does it. I also noticed that it is puffing smoke/oil out of the large breather from the powervalve location. I took the cover off the valve assembly and all three retaining screw for the valves were loose/out and the powervalves were loose. Tightened them down and the problem persists. I wonder if it is possible the jug got burned around the powervalves from them being loose and they are now leaking or if there is some kind of seal/o ring on them that could have gotten trashed from them being loose. Or would any of this not cause the symptoms I am having? I would like to know which direction to look before tearing it down further. Should I prepare for a new jug? Thanks in advance! Joe [/QUOTE]

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