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  1. #1
    Member Chickfisher69's Avatar
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    1996 Mariner 200 efi water pressure bouncing

    I just had my boat out after a 4 month break and noticed at 3000-4000 rpm my water prussure was going from 3-7 and at wot it was 17 never did this before .
    Any Ideas . Og321379



  2. Member Chickfisher69's Avatar
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    #2

    Re: 1996 Mariner 200 efi water pressure bouncing (Chickfisher69)

    Problem solved , replaced water pump and pop off valve gromet and presurre is 7 at 3200 and 22 psi at 5800 . never seen this high even with a new pump last year .



  3. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    #3

    Re: 1996 Mariner 200 efi water pressure bouncing (Chickfisher69)

    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by Chickfisher69 &raquo;</td></tr><tr><td class="quote">Problem solved , replaced water pump and pop off valve gromet and presurre is 7 at 3200 and 22 psi at 5800 . never seen this high even with a new pump last year .</td></tr></table>

    When installing a COMPLETE water pump kit, it's not uncommon to see a relatively substantial increase in water pressure.

    It will likely "tame down" after a couple of trips to the lake.

    Over the years, this particular pump has become more efficient, presumably due to a migration in the casting of the pump housing.




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