Fuel Advice/Running Issues
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  1. #1
    Rods 'n' Sods Junkie
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    Fuel Advice/Running Issues

    So 350 Goodwrench ( in a 1970 GMC TRUCK) with a 600 edelbrock carb.
    so on tick over and low ideal speed the engine runs fine but once I press for more throttle the motor struggles and feels like its holding back.
    Once I got it home I found a collapsed fuel line hose, great I though but ran it up the road and the engine feels as if its starving of fuel.( there was the occasional popping through the carb)
    Ive changed the fuel filter and did notice there was lack of fuel in the pipe from the carb down from the filter.
    Im thinking mechanical pump on the way out...before this the motor has run as sweet as a nut and never played up before, in all weathers conditions. There appears spark ( has a HEI) Distributor on it , so any other ideas and advice is welcome.
    Thanks in advance for any given.
    Scooby.

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    Official RnS Addict wakesupremo's Avatar
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    I'd have thought a 600 carb on a 350 motor is a little small. Have you tried jetting it up ?
    If it's got tits or tyres, its gonna be trouble

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    Official RnS Addict bigyellataxi's Avatar
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    If the mechanical pump is a diaphragm type, then yes, it could be on its way out.

    This new fuel degrades most rubber, especially if it's left to sit for any length of time...

    Fueled by Jim and Luckies.
    Still doing all the shit I used to ;-)

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  6. #4
    Rods 'n' Sods Junkie
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    Thanks for the replies...
    All things seem to point to the pump im gonna change and see.
    As said its always started on the key and always ran real sweet...
    Cheers...
    Scooby

  7. #5
    Stroker Kustom Jim's Avatar
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    Where was the collapsed line?
    Perhaps the hose from filter to carb is flakey too!?
    And has dumped debris in the fuel bowls - just another thing to have a quick skeg at while you're on
    "I'm not going to take this defeatist attitude and listen to all this crap any more from all these people who have nothing except doomsday to predict."
    Carroll Shelby

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