Now I'm scratching my head.
I have pulled the fuel pump and noticed that the screws around the perimeter of the pump which hold the two halves of the pump together were loose. You could see evidence of a small amount of gas that had leaked. I took the pump apart and everything was clean inside. No small particles at all. I reassembled the pump and made sure that the screws were tight. I attached my vacuum gage and on the inlet I was easily able to get 8-10 inches of vacuum just by hand pumping. Over on the pressure side I could get 3 1/2 pounds once again by hand. Now I know this was air pressure/vacuum, so does that mean anything because its air pressure and not liquid? Wouldn't they produce the same results?
I also disconnected the fuel line from the gas tank and blew it out with my hand tire pump into a container. Clean gas and just a few very tiny particles.
I'm suspicious of those pump screws. Could that be the problem. Just those small screws on the pump? I don't know the make of the pump, but it does say "Made in the USA" on the pump casting and there is a tag with the number 429 on it.
