Thanks for the advice and suggestions. Not stinking a finger in the engine sounds like a good idea. Regarding testing, the rebuilder said he tested it and I can believe him. Not sure how he did it. Before I pull the pump off the engine again (running out of gaskets), I've got a couple questions. If the pump is filling with gas, might that imply that the arm is being actuated by the cam? Perhaps not enough to eject the gas? Second question, if the cam is faulty, what is the remedy. Does it involve major surgery on the engine? Thanks
Sadly if the lobe responsible for making the fuel pump work has gone bad (round and not elliptical) then you have only 2 options:
1. replace the cam (fairly major surgery) or
2. buy an inexpensive electrical pump and use it instead of the mechanical pump. This is what I did about 20 years ago and I've never regretted it even for a minute...for a number of reasons.
Here is something that must be said about electrical pumps, though. Most of them produce too much psi. You want one that will produce 2 to 4 psi, because that is all you need. Any more than that can force your needle off your seat and mess things up badly. The pump I use is this one:
https://www.amazon.com/gp/product/B00496RE82/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1Good luck.
