Compression test

2 replies to this topic
  • Blome

Posted May 12, 2006 - 09:19 AM


What's the compression supposed to be on 1997 XR600R without the decompressor activated? The maual only gives a figure of 71psi with decompressor activated, but I took mine off my bike. I just did a compression test and I got 130psi. The bike was warm, the choke was off, and the throttle was wide open.

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  • Jon-D

Posted May 12, 2006 - 06:14 PM


I am not sure what the XR's should be, but that seems a little low to me. for comparison, I had a KX 250 that would read 210 with new rings and when it dropped to 180 I would rebuild it.

  • Blome

Posted May 12, 2006 - 07:06 PM


It still starts and runs fine though. Could it be the valves?

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