Thanks. Looking at the picture with the manual, I see how the tank is. What I have is the pump pickup on the lh side with a strainer. There is one pump that sends fuel to the engine. ( The book shows some 2 pump configurations). My pump has a smaller second line on the same end of the pump as the larger line going to the strainer that may go to the other side of the tank. Is that to draw fuel from that side? If not, where is the suction pump that you describe?

How this all started is that I was on a trip and may have gotten some dirty fuel. It was missing badly, and I had it towed. I replaced the filter (when I blew back thru it there was dirt) and it ran fine for maybe a week and then started missing again. When I first start it, it runs smooth for maybe 3 min and then goes to missing. I was assuming it was not missing because it was on cold start. Then I thought maybe the strainer was plugged.

I put a gage on the rail and it shows 50 psi at idle but it is missing. Based on the fact that it was ok for awhile with the new filter it still seems like a fuel problem