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  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech

Fuel Presure

  • Thread starter Thread starter GREG91GT
  • Start date Start date Jun 6, 2005

GREG91GT

Member
Jun 3, 2004
207
0
17
MISSOURI
Jun 6, 2005
#1
  • Jun 6, 2005
  • #1
Why does my fp change one day i will set it at 40psi and a couple of days later it will be on 48 or50?
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
Jun 7, 2005
#2
  • Jun 7, 2005
  • #2
Your guage is bad, bad regulator, fuel pump is going south, or you have some sort of restriction in the return line (there are others).

More info on components and how you test would help (if that is what you are lookin' for). Good luck.
 

GREG91GT

Member
Jun 3, 2004
207
0
17
MISSOURI
Jun 7, 2005
#3
  • Jun 7, 2005
  • #3
I have a FMU
 
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