Maintenance & Technical > KX500 Original
Very low compression K5
Michael janowicz:
Hello everyone, I was wandering if the Kips valve has any thing to do with loss of compression if installed incorrectly?? Thanks in advance, Mike
I think I may have slid the right side out, not sure if I put it back in correctly
sandblaster:
Rings, cylinder wall, piston, head gasket, head volume, head, plug threads, and distance from the exhaust port closing to TDC effect your compression.
There is some bleed from the kips reliefs in the cylinder wall to help with starting but that won't for the most part give you a low compression reading.
What compression are you reading and when was the last time a complete top end was done?
Michael janowicz:
I'm pretty sure the top end is original, really low hour bike, I can crank it by hand!! Single ring piston!! Maybe a broken ring??
Foxx4Beaver:
--- Quote from: Michael janowicz on December 22, 2014, 07:05:30 AM ---Single ring piston!!
--- End quote ---
no kiddin...what year is it?....'87 was the last year for the single ring...or is it a newer bike that someone installed a single ring piston into?
sandblaster:
If you pull the head off and rotate the engine I think you will see the issue...
Look for any color differences in the cylinder wall especially by the ports..
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