The Ford Barn - View Single Post - in-line elec fuel pump not pushing through mechanical pump

69a · 10-23-2025, 01:56 AM

The glass bowl gasket should not leak! Address this issue first.
Perhaps you have a high pressure electric pump. Too much pressure is not good for the glass bowl gasket, the needle and seat in the carburetor, and the mechanical fuel pump diaphragm.
The carburetor doesn't like pressure above around 2.5 PSI.

10-23-2025, 01:56 AM	#2
69a Senior Member Join Date: Aug 2020 Posts: 326	Re: in-line elec fuel pump not pushing through mechanical pump The glass bowl gasket should not leak! Address this issue first. Perhaps you have a high pressure electric pump. Too much pressure is not good for the glass bowl gasket, the needle and seat in the carburetor, and the mechanical fuel pump diaphragm. The carburetor doesn't like pressure above around 2.5 PSI.