Question about 2003 KTM SX 125
I checked the compression of the cylinder and I only got 39 psi. I know you're supposed to check it while the engine is warm, but I didn't have that option, so I checked it cold. That seems kinda low. Does anybody know what the stock compression should be? I looked but I couldn't find it in any of my manuals.
Not for sure ,,but I would think around 100 pounds or more,,,sounds like rings or reed valve
Posted on Apr 13, 2009
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Posted on Jan 02, 2017
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