Fuel Pressure Min for Warning Light

[OILBRNR]

Finally received my Westach fuel pressure gauge with user adjustable LED warning light. Ordered in April, and they were out of stock. Most of their non-standard units are built in lots of 24, so if you want one call them soon, or wait like I did. It is the same guage as Geno's now sells, except it has the HO LED.



Anyway, it is factory set for 5 psi. Any recommendations on a higher or lower setpoint?



Oh, and FWIW I talked to them about the durability of their sender. Vern (the dude I spoke with) felt it should hold up well on our application. We will see.

 

[Bigsaint]

I have my SPA set up to give a warning light at 3 psi's. I believe the book is still out on this issue, some think anything below 10 psi's is too low, some think below 5 psi's, I personally believe anything positive is okay, though I would get uncomfortable if I could drag mine down below 3 psi's @ WOT. Hope this helps.



Scott W.

 

[OILBRNR]

Well, thanks for the reply BigSaint. Surprised that no one else has an opinion on this topic.



I'd agree, after reading all the other post on this topic, that any positive pressure is a good thing. I'll also set the min. at 3psi and see what happens. I just hope that when I get it hooked up I'm not sitting a zero psi during WOT.



After 40k I would be real upset, as who knows when the lift pump went south.

 

[TURBOs4LIFE]

My question is... . if I see 3--2psi at WOT is that a sign of a failing lift pump or is it the poor design of the fuel system that lets it get that low?

 

[jstyer]

fuel pressure

What I like, because the pump is mounted so far from the tank and the fuel is basically gravity fed up to the pump, is when coming to fairly quick stop, you see the pressure really spike because inertia has the fuel still wanting to go forward and pushing up against the fuel pump. Boy do you get some nice high numbers.

 

[Bigsaint]

OILBRNR, sounds good, let us know what you have @ WOT.



Turbo, it seems that the guys that have their Carter recently replaced under warranty are seeing much higher psi's than that, although it's anyone's guess unless you have established a baseline and are now either seeing FP fluctuations(sp) or lower psi's at WOT than before, in regards to it going south. No doubt that the lift pumps location is not helping any, as are the banjo restrictions. It should be located in the rear with the gear, not the front with the grunt.



Check it out, I'm a poet, didn't even know it. Ooops, I did it again. DOH, now I sound like Brittany.

Scott W.