Grrrrr....what the f%$#?! ...Please help if you can...
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Grrrrr....what the f%$#?! ...Please help if you can...

  1. #1
    "Floatin' Motor" BoNeS's Avatar
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    Default Grrrrr....what the f%$#?! ...Please help if you can...

    So i replaced my fuel pump, fuel regulator, fuel lines, spark plugs, plug wires, cap and rotor, carburetor and electric fuel tank selector.....now the dang thing won't fire and when i flip the switch for the tank selector the fuel pump turns off. I even tried suirting some starting fluid into the carb, still no fire. I'm stumped and don't know where to start.

    (The motor is a 454BBC)

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    Senior Member Boat 405's Avatar
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    One thing at a time. Check fuel, check spark. Basics. Check grounds. Check plug wire order
    Boat 405.

  4. #3
    Senior Member StressExpress's Avatar
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    X2 Start simple first. Power to the Ignition?

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  6. #4
    Senior Member steadymobbin's Avatar
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    Quote Originally Posted by StressExpress View Post
    X2 Start simple first. Power to the Ignition?
    X3 sounds like an electrical problem to me. you flip the fuel selector switch and the pump shuts off?

  7. #5
    21 Daytona Outlaw's Avatar
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    Sounds like a ground problem to me


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    Senior Member rogerroost's Avatar
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    mismatched cap or rotor

  9. #7
    Senior Member GA Jet's Avatar
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    definitely timing. Might need a whole new distributor worse case, thats what it took for us

  10. #8
    Cas
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    Angry American Cas's Avatar
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    ditto on starting with the basics. make sure the the wires to and from the coil didn't come lose or broke, same thing with the ignition wires on the terminal block (if you have one). Check all grounds. If it ran before doing all the work, I would think you can pretty much narrow it down to those areas.

  11. #9
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    Default Bypass everything...

    Hot wire it... Plus battery, to plus coil, and jump the starter. It should bark. If it doesn't the problem is downstream from the distributor/coil... If it does fire, start jumping the ignition closer to the switch, like the ballast resistor if so equipped, then further towards the actual ignition switch...OR, simply put a volt meter on the + side of the coil and see if you have battery power there..... If you have 12 volts at the + side of the coil then the problem is between there and the spark plugs.... If you don't, refer back to the idea about hot wiring....
    Ray
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  12. #10
    Senior Member Schiada 201's Avatar
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    Check your plug wires to be sure they are in the right firing order, meaning did you put no 1 where the old wire was and 18436572 order for Gm. Pull no 1 plug turn over to check for no 1 TDC. Look down the carb and see if the bowls have gas and the squirters work, please don't do this while trying to check these things. Are you sure the plug gaps are right?

  13. #11
    "Floatin' Motor" BoNeS's Avatar
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    I have power to the ignition, when i checked the voltage at the coil it read 6.70. Cap and rotor are correct, everything connected at terminal block. Haven't checked for spark at the plugs yet. The firing order has always confused me, what side does it start from and which end? When i replaced the plug wires i did them one at a time so they wouldn't get mixed up but there is always that chance they did.

    The coil reading doesn't add up...help!
    Last edited by BoNeS; 03-02-2011 at 08:38 AM.

  14. #12
    mo balls than $cents$ IMPATIENT 1's Avatar
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    the coil voltage is right if you've gta points style distributor and are running a resistor on the coil, looks like a lil white ceramic bar with terminals on either end.

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

  15. #13
    "Floatin' Motor" BoNeS's Avatar
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    Quote Originally Posted by IMPATIENT 1 View Post
    the coil voltage is right if you've gta points style distributor and are running a resistor on the coil, looks like a lil white ceramic bar with terminals on either end.
    Correct, i do have a resistor....

  16. #14
    mo balls than $cents$ IMPATIENT 1's Avatar
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    pull the plug wire offa the coil at the dist, have someone spin/crank it while holding it close to the block to allow it to jump fire alil. if there's nothing at all, then you're looking at points issue or coil issue.if there is fire, then its not making its way thru the cap, time to look at the dist cap and rotor real well.

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

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