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  1. #1
    Frequent Poster banjomaniac's Avatar
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    Test motor when its out of the ski

    I bought a used r12x motor complete with the computer is there any way to test this out of the ski or is there any way to test the computer itself?

  2. #2
    Frequent Poster Lee Taylor's Avatar
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    Re: Test motor when its out of the ski

    Different brand and model but based on this video I would say yes you can test it out of the ski



    Last edited by Lee Taylor; 08-09-2017 at 11:30 AM.

    Owner. Rider. Maintenance. 15yrs.
    2002 Yamaha. FX140. 1000cc. Cruiser. Collectors model.
    2017 Lowes Stryker 16. Mercury 50hp 4-stroke.
    Video: https://www.youtube.com/playlist?lis...CHDiKr9UqpdsAV

  3. #3
    Top Dog west_coaster's Avatar
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    Re: Test motor when its out of the ski

    Bolt the motor to a pallet using the motor mounts and some good bolts.

    Not sure how much of the wiring harness would be needed to enable the computer to provide spark and such, might need the displays hooked up.....no idea. But you'll need a fuel pump at a minimum.
    05 F-12X

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

  4. #4
    Frequent Poster banjomaniac's Avatar
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    Re: Test motor when its out of the ski

    Actually I just got the motor off the skid out of the back of my truck and it has two of the engine mounts the other two are not there. I'm going to have to build a base for it to set on to get it evened up. It doesn't have any oil in it but I pulled the turbo off and the turbo looks good no shaft play, the residue oil in the turbo looks clean and it spins nice and the wastegate is free and moves like it should. I gotta wonder why this engine was pulled? Im sure there was a reason. Next I'll pull the plugs and see if the motor is free or locked up and try and put oil in it, maybe get some compression readings.

    Banjomaniac

  5. #5
    Top Dog west_coaster's Avatar
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    Re: Test motor when its out of the ski

    If you have the capability to do a leak down test, that would be way more informative than a compression test. Plus you won't have to spin the motor over meaning no wiring/battery necessary.
    05 F-12X

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

  6. #6
    Top Dog spatera's Avatar
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    Re: Test motor when its out of the ski

    You'll just have to rotate the crank by hand to close the valves but that won't be hard with the plugs out. Are you trying to check the motor or the ECM?
    03 Honda F12X (my favorite) Red of course
    Jim's Alpha Boost kit, H2O ECU Modulator, Large Intercooler, Solas intake grate and Impeller

    Used to have:
    98 GP760, 97 GTX Sea Doo, 97 GP1200, 02 Honda F12X, 2-03 Honda F12X, 05 SeaDoo GTX Supercharged

    Need to have:
    F15X

  7. #7
    Frequent Poster banjomaniac's Avatar
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    Re: Test motor when its out of the ski

    Both but I'm looking at the motor right now, I have no idea what the condition of this motor is, the guy called me and said he traded for it and a yamaha 62t so I bought both. He knew nothing about them or whats wrong with them. I'll pull the plugs and see if it's locked up. It doesn't have any oil in it.

    Banjomaniac

  8. #8
    Top Dog west_coaster's Avatar
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    Re: Test motor when its out of the ski

    Does it have a good exhaust manifold on it? I need one and they're on national backorder.
    05 F-12X

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

  9. #9
    Frequent Poster banjomaniac's Avatar
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    Re: Test motor when its out of the ski

    Not sure about the manifold, since the wastegate is free and looks good I'm guessing it might be good. If I get a chance I'll pull it off and do a water test.

    Banjomaniac

  10. #10
    Frequent Poster Lee Taylor's Avatar
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    Re: Test motor when its out of the ski

    Sounds like you are going to have to go through the entire engine. Because the suspicion is that there is something significantly wrong with the engine that is unknown but lurking in there somewhere. If you are not on a schedule it could prove to be enjoyable.

    Owner. Rider. Maintenance. 15yrs.
    2002 Yamaha. FX140. 1000cc. Cruiser. Collectors model.
    2017 Lowes Stryker 16. Mercury 50hp 4-stroke.
    Video: https://www.youtube.com/playlist?lis...CHDiKr9UqpdsAV

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