OK. Today we started from scratch. Set timing(it was WAY off), adjusted valves, gapped spark plugs and points. Cranked and cranked. One backfire. Then nothing. Looked at timing again. Decided to try setting it at 12* instead of 18*. No luck. Getting spark at points and plugs. Valves are set, so assuming they are all fine (they were when engine was put into corner) we have compression. Hey, what about gas? Fuel pump not pumping. HUH.
So, I took fuel pump off. A little worn, but it was working on the other engine just a few weeks ago with no problem. I magic markered the arm to make sure it contacts the lobe. Yes, it does. Removed again and if I actuate it by HAND, it pumps fuel. When I bolt it to the engine, no pumping. How is that possible? Is it possible to put these fuel pumps in incorrectly? Can the arm be worn down just enough to stop working? Can I weld a bead onto the arm? Am I missing something obvious?
Thanks!
i had the same issue on my 1929 it would pump fuel by hand all day long, but in car nothing !! did some measuring and foudn out that the arm was worn too much, yes it touched the cam but it did not move it enough to get a stroke to pull fuel. also checked the lobe on the cam to ensure it was not worn out. ended up haveing a friend weld the arm up then i ground it back into contour and bam it worked. also make sure the springs and arms work fine, the diaphragm is seated, the fuel bowl is sealed air the to the pump or it sucks air.
