Hi all, Today I checked the fuel regulator, in a fashion, by drawing a vacuum manually on the hose, and the diaphragm seems ok since it held without leaking down, which I would think it would do if failed, as it connects to the tank return line on the fuel side of the can.
A possibly significant discovery is that I need a new in-tank pump. I don't have a helper to listen at filler neck when first turning key on, and the tank is fairly full, plus I was getting good flow out the fuel rail, so I figured it should run regardless of primer pump condition, as the manual says it should with plenty of gas in the tank. Anyway, today I wanted to definitively check both pumps, so I dropped and disconnected the main pump again so I just was powering up the tank pump to an open hose. Gravity flow was stopped by light thumb pressure and with the key on it didn't seem to increase pressure. So I pulled the sender ( not any fun since it was untouched since 1990) and bench tested the pump. No good. Power is good at the wire connector at tank. No parts houses out here in the woods had a pump on hand but I have one coming in the morning. Not sure if it'll make a difference, but it's needed anyway. This problem isn't mentioned as a source for no cold start, but maybe a new pump will do it!

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