Hey Jerry,

Thanks for the confirmation on my diagnosis path. Yeah I really need to get a pressure gauge. I didn't realize that they could be bought for so cheap. Will a pressure test on a fuel pump not under load be the same as one under load? Some research on this is in my future. Currently the glass fuel bowl is completely full when not running. New filter and fuel bowl gaskets are on the way. Yeah I have hidden modern fuel filters on other vehicles in the past and I agree with you. I did such a pretty job at bending good replication hard fuel lines on this truck that I am very apprehensive to muck it up.

Movie of pump at idle the day of the problem:
https://studio.youtube.com/video/X6Wkn2Q0jIo/edit

Paul


1941 Chevy 1 1/2-ton WW2 4x4 dump truck
In the Stovebolt Gallery
Lots more pictures