Compression Test Reading

[HATE]

Does anyone know about what the compression reading should be for an '05 YZ125 using a standard tester that
screws in the spark plug hole? I can't find a value anywhere
in the manual. I'm reading about 130-135 psi. Seems kind
of low. Thanks.

 

[marcusgunby]

You expect about 150-185psi, you need to hold the throttle fully open and kick like mad.

 

[i_955]

I just picked up a compression tester and a YZ250.
Would the compression be simular for the 250?

 

[BooBoo]

Should be in the same ballpark...

 

[darringer]

Should be closer to 200psi or higher for the 250.