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I pull till the gage stops moving, holding the throttle wide open
 

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Pull till it stops moving.. (pull all the plugs out while doing it, and throttle at WOT)

If you have electric start that will read 10+ psi more than pulling by hand.
 

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bcole11 said:
how many pulls should you do to get the most accurate reading when doing a compression test
pull till it doesnt go up any more thats what i did. make sure they are fairly quick pulls[thumb]



IndyRXL said:
I pull till the gage stops moving, holding the throttle wide open
holding the throttle wot will do next to nothing on a test like this..
 

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Here's a link to some prior compression testing discussion..

http://www.snowmobilefanatics.com/forum/topic/113608-how-perform-compression-test?post=1140393
 
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