gentlemen,
in our trucks, what is the normal cruising @ 65-70 mph fuel pressure suppose to read...flat road, no load, just simply cruising.

thanks
jj

 

I show about...

16 PSI with a starter bump
15 PSI at Idle

All these numbers are in 5th gear. (top gear)
13 PSI at 45 MPH
12 PSI at 55 MPH
11 PSI at 65 MPH

6-7 PSI WOT

These are rough numbers... This will change if the truck is cold and first started it will be lower. Once warmed up the numbers rise to whats listed... This is a stock LP pump... Not a FASS or other high performance pump...

 

heck, i peg my 15 psi guage and i can only get it below 14 psi when i floor it. and i mean FLOOR it. i jsut installed a holley blue pump and im very pleased.

 

Yes I miss my holly blue, I mistakenly thought the pump was going bad and I replaced it with a carter pump . The carter only gives me 11 psi at idle (9 WOT). My holley gave me 15 at idle and 14 psi at WOT. I'm still thinking of putting my holley blue back on My problem was the gague was going bad

Hodiesel

 

My relocated carter gives my 15+ at idle (my guage is 0-15) and never drops past 12. Takes a couple seconds at WOT to get it under 13.

 

Hey,
Mine was going bad and would suck down to 6 or so at WOT but at about cruising w/stock setup I remember it being about 9 or 10?? i think somewehre around there! Roll On
TNutcher