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2010 4 cycle 30 hp Merc compression test?
When I do a compression test on a 2001 40 hp 4 cycle Merc motor how do I turn off the gas so the cylinders won't load up (wash out)? Also, what is the best way to get to the bottom plug?
40ELPT 4S
Ser # OT288196
Thanks much!
Last edited by MattG.; 12-30-2021 at 08:21 AM.
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Might try the 4-stroke forum - Mercury - 4 Stroke / Verado
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Phil
'09 Hewescraft ProV
'09 150 Optimax
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Mercury 3L/4 Stroke/Verado Moderator
Moving your post to the 4-stroke forum for you. Please update with the engine serial number.