How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Brad B Your Own Question
Brad B
Brad B, Ford Technician
Category: Ford
Satisfied Customers: 1091
Experience:  ASE Master Certified & ASE G1. Ford Senior Master
Type Your Ford Question Here...
Brad B is online now
A new question is answered every 9 seconds

What are the fuel pressure specs on a 01 F-150 with a 4.2

This answer was rated:

What are the fuel pressure specs on a 01 F-150 with a 4.2? I need to Know fuel rail pressure at idle and max pressure (with the fuel pressure regulator vacum line disconnected).



Thanks for choosing Just Answer!


The fuel pressure spec. when running is 28 - 45 PSI.


The spec. with the key on engine off is 35 - 45 PSI.


I have attached the specs. from the book to confirm the specs. CLICK HERE


I have also attached the pinpoint test for P0174. CLICK HERE .....


The fuel pressure test is done with the vacuum line attached. If you take the fuel pressure regulator vacuum line off the pressure will go to max.

Brad B and 6 other Ford Specialists are ready to help you