too much fuel psi????

[usramc]

If you have too much fuel pressure, whats likely to happen? Will the truck run funny?

 

[purpleheart350]

What psi are you seeing? Quite a few guys run at 70-75 psi. Mine will get up to 72 psi on a mech pump

 

[Wes Lewis]

Too much psi could blow an o ring in the injectors, as far as how the truck would run I cant say

 

[Patrick Feeley]

It can run funny (at least I remember it being reported in the past when guys started shimming the regulator). More is not always better. What is your's running at? 60-65 psi is good at idle. Cheers!

 

[usramc]

I haven't had a chance to check it, but I just did my fuel pump, fuel bowl and hpop, and I forgot that I had shimmed the fpr when my old pump was on it, so I'm guessing it may be too high with my brand new fuel pump and the shim.
Man Patrick your helping me on every forum I'm on.lol.

 

[mjonesjr]

According to Rosewood, 65 PSI is prime at WOT. I'm running mine at 66.5 PSI at idle so at WOT I am right at 65 PSI.

 

[7.3psd97444]

Simply just need to check it. Then we go from there. Obviously.

 

[85_305]

So optimal is 60-65psi @ idle... how much is acceptable at wot?

 

[Stroker#66]

Mine will hit 80psi when the FPR starts sEeing a boost ref

 

[7.3psd97444]

So optimal is 60-65psi @ idle... how much is acceptable at wot?

Basically you dont want your FP to drop from idle to WOP. A 10 PSI drop at most would be ok IMO at WOT. But Ideely you want it to stay around 60

 

[85_305]

Beautiful... super information. Thanks man.