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Mercury 225hp Optimax Year 2000

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  • Mercury 225hp Optimax Year 2000

    I have a Mercury optimax 225HP Year 2000

    Problem 1: When revving more than 2000 rpm the alarm goes on and does the sound in the video of the link attached.

    Video: https://youtu.be/ApXml5kY0mY

    Problem 2: The motor wouldn't rev more than 4000 rpm but I guess it is the low pressure fuel pump as it read about 6 psi, I had a problem with the High pressure and I changed it and worked well, so I guess the second pump has gone.

    Can someone help me please?

  • #2
    A continuous beep is overheating or oil pump failure which will cause rpm reduction. need to check oil pump. A 2000 opti low pressure fuel pump output is 6-9 psi.
    Regards
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    • #3
      The alarm isnt always continous sometimes it beeps every second for a short time and it doesnt do it everytime when the alarm does not beep it wouldn go over 4000 rpm.

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