Just bought this Bad Boy a few weeks ago and cannot get fuel to the fuel pump. Somewhere in her past, someone swapped a Chevy 454 into her along with a bed mounted 60 gallon auxiliary gas tank. She already had the stock tank and a factory "auxiliary" tank............total fuel storage is now at 90+ gallons. Guess at 6 MPG, she needs that much fuel capacity. Looks like the factory "auxiliary" tank fits directly above the stock tank. No selection valves were installed for these two smaller tanks. I need a factory installation manual for these two tanks to determine what my problem might be. Looks like the factory supply line from the stock tank was 3/8" diameter, but at some point was spliced down to 5/16"................just curious if this size restriction my not allow the fuel pump enough suction to pump fuel from the stock tank to the fuel pump.
With the gas cap removed and a disconnected supply line that goes into the pump, no fuel is present at the fuel pump.............but I can blow air into the tank and hear the bubbling of same.
Again an idea of the "plumbing" required by the stock tank and the factory "auxiliary" tank would be helpful.