I've been working on a 1951 Chevrolet 3100 with the original 216. A few days ago the truck died and would not restart. Figured out it was not getting any fuel from the pump. There was plenty of fuel getting to the pump, but nothing coming out the other side.
So I ordered a new pump and installed it yesterday, and still no fuel. Had fuel to the pump since it comes off the bottom of the tank it would come out the line with lots of volume.
Finally took the new pump off, and tried to work it manually and found it was trying to pump out through the inlet, and pull in through the outlet.
Replaced it with another pump today (warranted the other one) and before placing it on the engine, I decided to test it. I filled a clear bottle with some fuel, dropped a hose down in it and hooked it up to the inlet side of the pump. Within just a few pumps I had fuel coming out the inlet. Good I thought.
Put it on, no fuel.
I still had plenty of supply, so I unhooked the outlet, and cranked the engine while I watched to see if any fuel ever came out. Nothing. Put my finger over the outlet, and nothing. Not even air.
It acts like the cam lobe that drives the pump is bad. Are these engines known for the fuel pump lobe on the cam flattening?
I have an electric pump (low volume) on it and it runs like it should.
Thanks
