I have a 03 mtn cat 600 144". Just ran a compression test and its showing 90 psi per side. 2200 miles and the motor has never been opened. I need advice. New pistons?
90 psi
- Thread starter dyrengd
- Start date
Any two stroke need at least 110 psi to run much at all. You could maybe just get by with pulling the jugs and putting some rings in it. You will just have to take them off and see if the pistons look bad or not.
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