1991 S10 4.3 auto 4wd, I removed the bed a few months ago and power washed the frame, rear end, fuel tank, pretty much everything that was exposed and treated it with a rust convertor. Now I have crank, no start, but will start if primed and run until the primer fuel runs out. I don't hear the fuel pump turning on when I turn on the ignition. Just checked the ECM B fuse and it is good. Replaced the fuel pump relay on the firewall a few months before this issue started. Any ideas of where I should start checking/testing?