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whats the proper way to check your compression? should the sled be warm or cold, take both plugs out, hold throttle wide open?? thanks
 

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Motor should be cold or warmed up SLIGHTLY. Take out both plugs so the cord will pull easier. Put guage on one side at a time :) . Pull at least 3 times with throttle wide open.

Cat S.
 

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motor should be ice cold, best if it sits over night. even a slightly warm motor will read a lower psi .

remove only 1 plug because of the commen crankcase and psi will be lost out of the open plug hole in the head.
hold throttle wide open and pull till the needle stops moving.
repeat for the next cyl. :)
 
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