Engine/Transmission (1994 - 1998) What gage do i need to check fuel pressure

[Bhale]

I need something to check the fuel pressure, something simple (read Cheap) that i can mount to one of the ports on the PrimeLock. This truck is still running poor and i need to make sure it's getting fuel before i buy the delivery valves



Brian

 

[bgilbert]

You can use an old boost gauge or any pressure gauge for fuel pressure. With p-pump, I think you'll want something higher than 30psi, but at idle I think it will be ok.

 

[Bhale]

Cool, i've got a couple of them laying around...



Thanks

Brian

 

[Bhale]

Hmmmm..... 30-35 psi at idle and 40-45 at 2000 rpm. Idle sounds a bit high.



Any ideas?



Brian

 

[T-Bone]

Bhale,



I'm working on this same thing. If you don't mind an under hood gauge, you can get one of these from Granger for about $8. I think one of the ports on the Prime-Loc is pre filter and one is post. Not sure which is which. But I think it is Yknot that has two gauges on his Prime-Loc to monitor both. I'm kinda thinking I want an "in-cab" reading so I can read the fuel pressure under load while driving.



Granger also has needle valves here.



T-Bone