Vehicle: 2000 Chevy Express 3500 passenger van 5.7L
History: Low fuel pressure when starting. If the van sat longer than 24 hours it wouldn’t start without a squirt of starting fluid. I suspected it was the fuel pump but didn’t get around to changing it. My wife put in “extra” starting fluid one afternoon and tried to start the van - there was a small explosion which blew up the air cleaner housing and started a fire. She put the fire out with an extinguisher. The fire was restricted to the air cleaner media and housing and burned for about 45 seconds.
Repairs: I cleaned up the extinguisher material and replaced filter housing and media. I checked the fuel pressure at the fuel rail - pressure gauge read zero. I checked the relay and all of the fuses - everything was in good shape. I looked for a fuel cutoff switch but the Chevy tech I talked to said there isn’t one on that year of van - he recommended that I disconnect the battery for 5 minutes to reset the system. I did that too. Still no fuel pressure. Replaced the fuel pump and fuel filter. Still no fuel pressure.
Current Status: The engine will crank and if I put starting fluid in the van will turn over and run as long as there is starting fluid. When the accelerant is gone the engine stops running. Again, it will crank but there is no fuel pressure at the rail. The manual says the pressure should be 85 lbs with the key on and engine off and then 45 - 55 lbs running. Any thoughts?