Fuel Boiling Out Of Carburetor

Posted by Packard 1948 On 2015/9/3 19:47:48

I have been having issues with the fuel being boiled out of the carburetor after the engine has been warmed up and sits for a half hour or so.

I did install a glass bowl fuel filter this time and I can tell after opening up the hood that the glass bowl is half empty (yes I'm pessimistic on this) and can even watch the fuel boiling inside the float bowl.

So to start the engine after it is hot the starter motor would have to turn and turn for a very long period of time before any fuel can get pumped into the carburetor float bowl. At least this car has an electric pump so 10 seconds with the electric pump on is the fix.

I have had issues with other cars having the fuel boil out of the carburetor. This has been the case with small block Mopars, big-block Mopars, slant six Mopars, & a Cadillac engine.

It seems the new fuel here in California has such a low boiling point that it simply boils out of the carburetor after the engine sits for a while.

Does anyone else have this issue?