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  1. #1
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    Question 2007 Mercury 50 ELPTO Water PSI.

    Having issues with water pressure on this motor. I bought this boat/motor last year. First trip out last year I was only getting only 5-6 psi at wot. I replaced the impeller and then at best I got 10-12 psi at full throttle. Seems to me it should be a higher psi than that. Took it out again the other day and I’m back to the 5-6 psi at wot and maybe 2 psi at idle. Got a descent stream at wot but very weak at idle. Would a complete water pump kit fix my problem? Motor is on a 2007 21 ft sun tracker pontoon. I have a 2008 60 hp 4 stroke on my fishing boat and get around 20 psi at wot. So I’m thinking I have a problem somewhere. Any help would be greatly appreciated.

    Serial # 1B497104
    Last edited by Boozer; 06-08-2018 at 12:39 PM.

  2. Member
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    #2
    pull thermostsat cover and examine it and restictor
    .................................................. ...the scariest thing in life is the unknown ...................................

  3. Member
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    #3
    Pulled thermostat and restrictor this morning, everything looked good in there.

  4. Member
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    #4
    go back to the source [water pump]
    .................................................. ...the scariest thing in life is the unknown ...................................

  5. Member
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    #5
    Would you happen to know the part # for a complete water pump kit? And also what pressure should I see when new kit is installed?

    2007 50 hp 2 stroke.
    Serial # 1B497104

  6. Member
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    #6
    812966a11 complete kit
    .................................................. ...the scariest thing in life is the unknown ...................................

  7. Member
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    #7
    Thank you sir.

  8. Member
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    #8
    welcome
    .................................................. ...the scariest thing in life is the unknown ...................................