460 ford with holley 750 double pumper bogs down. Fuel pump?
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460 ford with holley 750 double pumper bogs down. Fuel pump?

  1. #1
    Senior Member neattouch648's Avatar
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    Default 460 ford with holley 750 double pumper bogs down. Fuel pump?

    When i bought my boat it came without a fuel pump. I put a stock fuel pump off of another ford engine on it. I think it came off of a 302 or something like that. The boat runs fine and idle and without load but as soon as there is a load on it (in the water) and you step on it it revs up fine and then boggs down after a couple of seconds, If you return it to idle and then rev it again after a couple of seconds, its back to being perfect. Could this be the Fuel pump not filling the bowls up quickly enough?
    Thanks

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    Senior Member harley222's Avatar
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    sounds like a good place to start.....

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    Senior Member zacho!'s Avatar
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    or clogged filter..

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    tintingsandiego krusn56's Avatar
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    Ck your fuel pressure gauge. You could have some crap in your tank.
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    are you running 92 pump gas??

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    Member TrynPas's Avatar
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    Quote Originally Posted by ridinfool View Post
    are you running 92 pump gas??
    is this neccesary with less than 10:1 compression?
    Quote Originally Posted by HawaiianJet View Post
    You done got my kentucky ass all confused!!!

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    Senior Member 78_Tahiti's Avatar
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    the 92 octane is well worth the 2 or 3 bucks a tank difference in price. Are your tanks aluminum or fiberglass? bee seeing a bunch of the fiberglass ones coming apart lately with the newer gasoline. The methanol softens them up. also the pump you got may be a little week for big block. Remember horsepower is = to gallons per hour of fuel, a little block only needs 2/3 of what a big block uses. I might try putting a hose in a 5 gallon gas can directly to the fuel pump, then go drive it. you will know then if its pump, carb, pickups (in tank) filter, or tank!

  10. #8
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    Quote Originally Posted by 78_Tahiti View Post
    Are your tanks aluminum or fiberglass? been seeing a bunch of the fiberglass ones coming apart lately with the newer gasoline. The (ETHANOL) softens them up.
    fixed it for ya....

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    Senior Member neattouch648's Avatar
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    I found a high volume mechanical pump for 30 bucks so i went ahead and ordered it...140gph should be enough right? I did replace the filter and i do run Ethanol free 87 but I will switch to 92 next time I fill up. Keep your fingers crossed for me

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    Senior Member YumaJet's Avatar
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    Quote Originally Posted by neattouch648 View Post
    I found a high volume mechanical pump for 30 bucks so i went ahead and ordered it...140gph should be enough right? I did replace the filter and i do run Ethanol free 87 but I will switch to 92 next time I fill up. Keep your fingers crossed for me

    I hope you either have or bought a regulator to use with the fuel pump. I just finished buy a new fuel system and bought a jegs 110gph fuel pump. The $30 Ebay fuel pump recommened a regulator. I would for reliablity at using the 140gph fuel pump.
    Last edited by YumaJet; 07-19-2010 at 09:47 PM.
    boatless....

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    Neat,

    One other thing you might want to check is the venting. Your tank is vented either thru the cap or the tank directly. Some one may have changed caps and put the wrong one on.

    If the fuel pump change does not correct the problem see if loosening the cap helps.

    Gooo luck

  14. #12
    Senior Member Widetrack's Avatar
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    One thing did you check your float level??? That has not been said! WT


    SOMEONE SAID YOU CAN'T TAKE IT WITH YOU! SO,IM BURNING IT UP ONE GALLON AT A TIME!
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    Senior Member neattouch648's Avatar
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    I did check the float level and it was perfect in both bowls...I didn't even think of the fuel tanks not being vented. They have the caps that are built into the hull of the boat I don't know what they're called.....are that kind usually vented? I'm assuming they should be....

  16. #14
    Senior Member YumaJet's Avatar
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    Quote Originally Posted by neattouch648 View Post
    I did check the float level and it was perfect in both bowls...I didn't even think of the fuel tanks not being vented. They have the caps that are built into the hull of the boat I don't know what they're called.....are that kind usually vented? I'm assuming they should be....
    I've never heard of that happening to a Jet Boats, but common on jet skis. I have to vent my jet skis if I let them sit for awhile. They dont build enough pressure to get fuel to the pump after a few months of sitting. I really don't see that happening to a mechanical fuel pump though. Check the basics and start with the fuel system and eliminate things as you go.
    boatless....

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