Fuel pressure issues w/ 5.0

[Shran]

Here's the situation - I have my 5.0 sitting in my truck, and I'm trying to get it started. Runs fine on starting fluid. I'm not getting any fuel pressure past the regulator on the fuel rail - as in, I can prime the system, and pull the schrader valve completely out of the rail and there is nothing, no squirt of fuel, no hiss, nothing. But if I pull the pressure line off the rail right before the regulator, I get misted with 50psi fuel for as long as it takes to bleed all the pressure out.

Can a FPR just get stuck shut? That is the only thing I can think of. I don't know if it matters or not, but I got the fuel lines switched at the tank accidently, so that should have made it so both the return and pressure sides of the rail were getting fuel. Could this have destroyed the regulator?

I have tried applying vacuum to the regulator as well and it doesn't seem to have helped matters.

 

[mikez]

definately have your lines crossed. Fuel comes in, goes to all injectors then to regulator, then back return line.

 

[fordmike1]

definately have your lines crossed. Fuel comes in, goes to all injectors then to regulator, then back return line.

I concur with this.

 

[Shran]

Wow, F me. I feel like a tard.

So if I'm understanding this correctly, the regulator controls pressure going OUT, not incoming? Guess I need to go to remedial EFI classes.

 

[fordmike1]

Wow, F me. I feel like a tard.

So if I'm understanding this correctly, the regulator controls pressure going OUT, not incoming?

This would be correct.

 

[mikez]

so did you figure it out??

 

[Shran]

so did you figure it out??

YES... haha... moved the lines and swapped fittings, and it fired right up. I owe you guys a couple beers next time you're in SD.