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compression 25hp merc

Jezza101

New member
hi all.

can anyone tell me roughly what compression i should have on a 25hp 2 stroke mercury sea pro?

i tested it and i got about 90 on both cylinders but i cannot help feeling this is low? the engine is 17 years old.

thanks

jezza101
 
Use another tester.-----Or remove bypass covers on the side of the block for a " look see " at the pistons and rings.----No substitute for that visual check and that is easy to do and costs no coins.
 
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