Fuel Boiling in the bowl

[maddog11]

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)

 

[BigDaddyCee]

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.

 

[393Bird]

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...

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

Good luck

 

[maddog11]

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!