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  1. #1
    PWCToday Newbie
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    04 f12x overheats and loss of power

    My brother owned the ski for about 10 years and it sat 4 about 6 years I finally got it for next to nothing and I got it started the actuator I replaced on a turbo because it was rusted and I finally got it running and it only goes to 40. It now overheats. Should i take the intercooler out and exhaust mani to clean the water jackets. And why wont it go faster. Cant see throwing this thing out

  2. #2
    PWCToday Guru NunoP's Avatar
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    Re: 04 f12x overheats and loss of power

    wellyou better start with the overheating problem.
    Overheating where?
    do you get a code?
    2004 F12X

  3. #3
    Frequent Poster banjomaniac's Avatar
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    Re: 04 f12x overheats and loss of power

    What does the exhaust manifold look like, I have a hard time beleiving it's not corroded after that long? But did you pull all the water lines and make sure they are clear? As far as the intercooler, pretty sure you can leave it on and just pull the hoses off and try to blow through it, running water through it doesn't necessarily tell if it's clogged gotta blow through it.

    Banjomaniac
    Last edited by banjomaniac; 07-10-2017 at 11:19 PM. Reason: Add text

  4. #4
    PWCToday Newbie FDNYMEDIC's Avatar
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    Re: 04 f12x overheats and loss of power

    My 07 just started doing that also.. runs rough after about 2 min. Then shuts off.
    No code.
    Any ideas or suggestions appreciated..
    03 Honda F-12X
    07 Honda F-12.

  5. #5
    Frequent Poster banjomaniac's Avatar
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    Re: 04 f12x overheats and loss of power

    Here is the way to check for problems and also problems stored in the memory...

    SELF-DIAGNOSTIC PROCEDURE
    Fit the safety lanyard clip to the base of the engine
    stop switch.
    If the warning light and PGM-FI malfunction indica-
    tor lamp (MIL) do not blink, the PGM-FI system has
    no problem.
    If the MIL and warning light blink, and the warning
    buzzer sounds, the PGM-FI system has a problem.
    Push the SET, MODE, ID SET or ID NO. switch for
    more than 2 seconds to stop the warning buzzer.
    Push the SET and MODE switches simultaneously
    for more than 5 seconds to blink the failure code.
    Read and record how many times the MIL and
    warning light blinks and determine the cause of the
    problem (page 8-13).
    To read the ECM memory of problem data, perform
    the following:
    Pull the safety lanyard clip off of the engine stop
    switch.
    Remove the seats (page 3-4).
    Remove the dummy connector from the service
    check connector.
    Connect the service check connector terminals with
    a jumper wire.
    Fit the safety lanyard clip to the base of the engine
    stop switch.
    Push the SET and MODE switches simultaneously
    for more than 5 seconds to blink the failure code.
    If the ECM has no problem data in its memory, the
    MIL and warning light will come on and stay on.
    If the ECM has problem data in its memory, the MIL
    and warning light will start blinking.
    Read and record how many times the MIL and
    warning light blink and determine the cause of the
    problem (page 8-13).

  6. #6
    PWCToday Newbie
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    Re: 04 f12x overheats and loss of power

    Not getting a code it stalls out now. Water pissing out is extremely hot while in the water. Is there a water pump besides the impellar?

  7. #7
    Top Dog west_coaster's Avatar
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    Re: 04 f12x overheats and loss of power

    No water pump, the jet pump provides the pressurized water.

    You can take off water hoses at different spots and see how much water flows using the garden hose flushing method. I'd start with the easy ones like the ones on the exhaust side and make sure water flows well.
    05 F-12X

    I'm on the drinking diet. I lost 2 days already.

  8. #8
    Top Dog west_coaster's Avatar
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    Re: 04 f12x overheats and loss of power

    Quote Originally Posted by FDNYMEDIC View Post
    My 07 just started doing that also.. runs rough after about 2 min. Then shuts off.
    No code.
    Any ideas or suggestions appreciated..
    Check to make sure your exhaust isn't plugged, also check to see if you lose fuel pressure.
    05 F-12X

    I'm on the drinking diet. I lost 2 days already.

  9. #9
    PWCToday.com Is My Home Away From Home JR IN JAX's Avatar
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    Re: 04 f12x overheats and loss of power

    When the overheat [thermometer symbol on dash] trips [ECT trip], it will cause the engine to buck and require a lanyard pull to reset it. It will not set an FI code. If the engine just overheats and instantly dies, it is the MST which is a Coast Guard requirement that an overheated exhaust manifold instantly kill the engine to prevent a fire. It also will not set an FI code.
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