Fuel Check Valves

[ME111]

How critical is it to have the desired constant fuel pressure to the rails upon startup?

I now have a return fuel setup but now the pressure bleeds off when not running thus having to build back up when I restart. Makes sense due to the return regulator installed after the rails. I have an inline check valve installed on the supply line to the rails but that's not really doing much good anymore IMO. My fuel pressure now is about 20psi after sitting for awhile and then simply turning the key to the ON position which primes the pump. It does go back to about 50psi when the engine is turned over.

Is this normal?

[Adobedude]

Yeah...

And I like it...The fuel system isn't under pressure all the time. I usually turn the pump on manually for a couple seconds before I start the truck

[Duner]

Yeah...

And I like it...The fuel system isn't under pressure all the time. I usually turn the pump on manually for a couple seconds before I start the truck

Same here. I just turn the key to the "on" position for 2 seconds then hit start.

[ME111]

Same here. I just turn the key to the "on" position for 2 seconds then hit start.

You guys make it sound like you got some extra switches and buttons in the cab. Wazup?

[jweltch]

I just turn the key to the "on" position for 2 seconds then hit start.

No extra switches.

[Duner]

You guys make it sound like you got some extra switches and buttons in the cab. Wazup?

No extra buttons or switches, just the key ignition switch. I do have extra buttons and switches, but they are for water pumps, boost controllers and fans. The ignition and fuel pumps are all triggered from the key switch.