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  1. 08-17-2010, 08:38 PM #1
    hsteven916
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    1999 Mercury 225hp efi minimum psi on compression test

    Could anyone tell me what's the minimum psi for the compression test for all cylinders???
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  2. EuropeanAM
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    #2 08-18-2010, 01:20 AM

    Re: 1999 Mercury 225hp efi minimum psi on compression test (hsteven916)

    Specifications:

    90-110 Psi, with a MAXIMUM variance of 15 psi between highest, and lowest cylinder.



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    #3 08-18-2010, 10:30 AM

    Re: 1999 Mercury 225hp efi minimum psi on compression test (EuropeanAM)

    All my cylinder is at 90 psi....so that's good right???
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    #4 08-18-2010, 12:54 PM

    Re: 1999 Mercury 225hp efi minimum psi on compression test (hsteven916)

    That reading would be within specifications.



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