40 PSI Fuel Press at the rail. Engine starts, Fuel pressure immediately drops & engine dies. Thoughts ?

 

When the ignition is switched "on", the Pump 2 will run for 2 sec. and prime the system (to ~40 psi). On engine is start-up, the Pump 1 will run to supply fuel. The Pump 2 will later be switched "on" if there is higher demand for fuel (hard acceleration or high speeds).

It seems that your Pump 2 is good but Pump 1 (or its relay) is bad.

 

Great response !
Asking for a friend who had the start / run issue & a heart attack about the same time. He's in recovery, so it may be a few days before he's in shape to check it out.
Thanks !


QUOTE=M. Stojanovic;2679568]When the ignition is switched "on", the Pump 2 will run for 2 sec. and prime the system (to ~40 psi). On engine is start-up, the Pump 1 will run to supply fuel. The Pump 2 will later be switched "on" if there is higher demand for fuel (hard acceleration or high speeds).

It seems that your Pump 2 is good but Pump 1 (or its relay) is bad.[/QUOTE]