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  1. #1
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    2000 Mercury 225 EFI

    Sorry to have so many questions, but thanks for all the responses.
    I have a ProCraft 215 Combo with a 225EFI on it, the prop says Tempest II and is a 3 blade design, stamped 23P on it. I can not get the engine to rev past 5300 - 5400 RPM which is about 56 - 57 MPH on GPS. Is this a normal speed for this boat?

    Also under WOT at these speeds should you be able to trim out your motor to a point where the boat looses speed. Mine does not seem to be able to trim past a certain point - at 5300 RPM i had the motor trimmed up as far as it would allow me, it wont raise any higher - is this nomal?

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  3. Old Scout Lpolk's Avatar
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    #2

    Re: 2000 Mercury 225 EFI (Northern1)

    JMO, No macameck but if it was me with a 23 pitch prop at those RPM's and speed, my first instinct would be my motor. Do a compression check and etc. Just a starting point.

  4. Member
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    #3

    Re: 2000 Mercury 225 EFI (Lpolk)



    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by Lpolk &raquo;</td></tr><tr><td class="quote"> JMO, No macameck but if it was me with a 23 pitch prop at those RPM's and speed, my first instinct would be my motor. Do a compression check and etc. Just a starting point.</td></tr></table>

    Something is wrong. TPS. Compression, bad plugs, linkage out of adjustment. Needs to be checked. good luck

  5. Mercury - 3 Liter Moderator EuropeanAM's Avatar
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    #4

    Re: 2000 Mercury 225 EFI (Northern1)

    I agree. Start with the BASICS:

    Compression test
    Spark test (on all six cylinders)
    Fuel Pressure and Delivery Tests

    Make sure you have a FRESH set of spark plugs (the CORRECT plugs for your engine serial number).



    Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
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  6. Member Nikon Man's Avatar
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    #5

    Re: 2000 Mercury 225 EFI (Northern1)

    Just to add about the trim issue, your trim is going to be limited to what the trim cylinders will support. Once you trim off those 2 cylinders the forward torque will push your motor back down to make contact with them in order to support the load. You can run trimed higher but at a much slower speed then you'll be supporting the motor on the tilt cylinder and not the trim cylinders............
    Gary



    http://www.youtube.com/watch?v=2IhSRiwvGwA


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    Growing old is inevitable, growing up is optional.......

    S.W. Ohio

  7. Member
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    #6

    Re: 2000 Mercury 225 EFI (Nikon Man)

    You have any buddies with some other props you could try? I run a 26P 4 blade TXP on my 225 and I can hit those RPMs with it. I'd think a 3 blade 23P is not near enough prop. Maybe your tach is off a bit and you are hitting the limiter?

  8. Member
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    #7

    Re: 2000 Mercury 225 EFI (Northern1)

    what would be a normal speed for the boat, i bought it this spring and on its first run was able to get 64MPH at 5800 RPM but cant seem to get past 5400 RPM now.

  9. Mercury - 3 Liter Moderator EuropeanAM's Avatar
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    #8

    Re: 2000 Mercury 225 EFI (Northern1)

    <table width="90%" cellspacing=0 cellpadding=0 align=center><tr><td>Quote, originally posted by Northern1 &raquo;</td></tr><tr><td class="quote">what would be a normal speed for the boat, i bought it this spring and on its first run was able to get 64MPH at 5800 RPM but cant seem to get past 5400 RPM now.
    </td></tr></table>

    That would be an excellent question for the ProCraft forum.... surely someone there has (or has had) a similar setup.



    Dual Mercury Master Technician- for Mercury Outboards, Racing & Mercruiser Sterndrives in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 38 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

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