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  1. #1
    My Boats:
    2004 Cobalt 360 and 1974 Donzi Sweet 16
    Join Date
    Jul 2007

    Merc 496 Crate Motor

    Guys - I'm hoping you can give me some much needed guidance. I bought a Cobalt 360 3 weeks ago. On week two - at startup I threw a rod. Oil levels were perfect, motor has 460 hours on it. The motor is a 2003 TPI.

    Last week I bought a merc crate motor (rebuild) and dropped it in. Can someone explain to me how to set the motor for startup? Do I have to worry about timing / top dead center. The crate motor was a long block with tin and a water pump.

    I turned the key on - power to the fuel pump - no power to the coils. Cranks over fine, but won't start due to lack of spark. Any suggestions would be appreciated!. ..

  2. #2
    SORE MEMBER Platinum Member Wobble's Avatar
    My Boats:
    SeaDoo RXP & RXP-X, Stryker Equalizer 28, Eliminator Daytona Jet
    Join Date
    Apr 2004
    2950'49.74"N 95 5'17.55"W.......TEXAS
    It could be a

    1/ ground problem

    2/ harness or sensor unplugged somewhere.

  3. #3
    My Boats:
    33 Outlaw
    Join Date
    Jul 2005
    Tierra Verde, Fl
    First thing I would check is the kill switch. Both ends.

  4. #4
    Platinum Member Platinum Member seafordguy's Avatar
    My Boats:
    Cigarette - Cafe Racer
    Join Date
    Jun 2006
    Seaford, VA
    Quote Originally Posted by Skullkrusher View Post
    First thing I would check is the kill switch. Both ends.
    Agreed - been there before....

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