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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
How do I properly check Compression?
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[QUOTE="leishmaa, post: 849329, member: 57020"] I would like to check the compression on my YZ125 and have never done it before. I read that I need to keep the throttle wide open when performing the check. Do I need to have the exhaust in place? The Clymer manual tells me that I should be getting 100 to 125 psi. I can get up to 190 if I keep kicking, but I don't know if I should be kicking the bike over multiple times or just once when checking compression. Basically, what is the step by step procedure. My ultimate goal is to check if I need a new top end. Thanks for your time [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
How do I properly check Compression?
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