Fuel check valve

**ponyslayer** · 10-05-2011, 06:51 AM

I have a 255lph fuel pump and new regulator that runs at 58psi but doesnt hold any residual pressure at all. Has anyone tried installing an inline check valve to fix this?

**ponyslayer** · 10-06-2011, 08:55 AM

or any suggestions...

**Cutlass** · 10-06-2011, 06:03 PM

The pump should have a built in check valve. Also check for a leaky flex tube/hose for the fuel pump inside the tank. There have been a couple guys here that have had that.

**0rion** · 10-06-2011, 09:06 PM

Originally Posted by Cutlass

The pump should have a built in check valve. Also check for a leaky flex tube/hose for the fuel pump inside the tank. There have been a couple guys here that have had that.

this is where my money is at......seen that be a problem multiple times.

**Deviant LS1** · 10-06-2011, 09:16 PM

What year is your car and what pump did you use? 98 metal tank cars can use any universal walbro. 99+ Plastic tank cars need to use a walbro with a venturi fitting like so.

The venturi line needs to be hooked up to that brass fitting. Without it you will bleed off pressure as soon as the car keys offs and you'll have 1/4 fill tank issues.

**ponyslayer** · 10-10-2011, 07:56 AM

Originally Posted by Cutlass

The pump should have a built in check valve. Also check for a leaky flex tube/hose for the fuel pump inside the tank. There have been a couple guys here that have had that.

yeah i figured the check valve in the pump isnt working but couldnt find a replacement...