Fuel Boiling in the bowl

Discussion in 'Fox 5.0 Mustang Tech' started by maddog11, Jan 2, 2004.


  1. maddog11

    maddog11 New Member

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    After a stock rebuild on my 5.0 (82 motor) the fuel boils in the bowl after the engine gets up to temp. Any ideas? Now the engine does have longtube headers, a 1" aluminum spacer under the carb, and it does have a functional hood scoop. So there is plenty of air to cool it down, but it isn't doing this. The engine doesn't overheat. Would a fuel line cooler correct this, or help this issue? Any Ideas would be great! Also on a side note - How hard is it to change the drivers side door glass? (86 5.0)
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  2. BigDaddyCee

    BigDaddyCee Founding Member

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    Sounds like your old fuel line may be too close to your new headers and heating up the fuel. I would recommend re-routing the fuel line if possible. Otherwise you may run into the problem of vapor locks down the road. Another temporary option may be to create some form of a heat shield to protect the header heat away from the fuel line. But personally if it were my car I would keep the fuel away from any heat source just to be safe! Fuel and heat don't mix well in the wrong places. HTH.
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  3. 393Bird

    393Bird Founding Member

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    I would swap out the spacer for a non metal one. Aluminum conducts heat very good, thats why they switched to non aluminum windows for houses. If putting in a non metalic one does not cure the problem, you may have to set up your fuel system like mine...

    [​IMG]

    Here is my full fuel system.
    http://www.qsl.net/wd4ngb/birdwork5.htm

    Good luck
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  4. maddog11

    maddog11 New Member

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    Well I'll try both ideas, as I wasn't the one who did the work to it. The car belonged to my brother inlaw. So both the fuel line and the spacer could be the problem/problems!
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