Hello
I have 02 f150 5.4 with a vortech supercharger. And just recently noticed that my fuel psi does not get close to 30 psi. When i would punch it before i would get up to 40psi until now.
So my question is could it be the inline fuel pump that went bad?

Thank you all

 

are you running an FMU????



for sure ditch the inline crappy excuse for a fuel pump and run a 255lph in tank pump

 

I agree 100%
Also,
when was the last time you changed the fuel filter?

Phil

 

yes I am running an FMU. also just changed the fuel filter two ago. I removed power to that inline fuel pump and the truck ran the same with it off. (Just did that for testing purposes)

Do you have a part number or location where i could get the fuel pump you recommended?

thanks again for all the help!

 

If you unhook the power to the in-line pump. Wouldn't that cause a restriction?
I don't know, never ran an in line one.

I run 2 Walbro's in my truck. This is about the cheapest place to get one.
http://treperformance.com/i-788624-f...1997-2002.html

Phil

 

YES, if the inline pump has no power or has failed then it will be causing a restriction


since your starting on the fuel susyem anyway, see if you can finda set of 42# (lightning/Harely truck) or 39# ('03-'04 cobra) injectors and a ford SVT 90mm MAF

then have your truck tuned, it made a world of difference on mine VS the FMU