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

What is tha stock fuel pressure?

  • Thread starter Thread starter cjman15
  • Start date Start date May 23, 2005

cjman15

Banned
Apr 15, 2004
1,009
0
0
Fairfield, PA
May 23, 2005
#1
  • May 23, 2005
  • #1
Wanna put in a regulator and guage here soon and I was just curious to what tha stock pressure was... I don't know what it is... 30psi?
 
S

Scorcher2005

Member
Apr 17, 2004
883
0
16
South Carolina
May 23, 2005
#2
  • May 23, 2005
  • #2
i think its actually around 40psi, give or take a few psi
 

cjman15

Banned
Apr 15, 2004
1,009
0
0
Fairfield, PA
May 23, 2005
#3
  • May 23, 2005
  • #3
OK cool, because I wanted to get those things and see if I can take care of an overfueling issue with my car, thanks
 

88_GT_5_oh

Sportin' a turbo 5.0 in Canadistan
Jul 4, 2004
1
0
1
WPG/MB/CA
May 23, 2005
#4
  • May 23, 2005
  • #4
39-40 psi is about normal
 
1

1993_GT

New Member
Apr 1, 2005
6
0
0
May 23, 2005
#5
  • May 23, 2005
  • #5
Scorcher2005 said:
i think its actually around 40psi, give or take a few psi
Click to expand...

Yep 40 PSI is the correct pressure
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
34
129
May 23, 2005
#6
  • May 23, 2005
  • #6
38-39 is spec with the vac line off and capped. with the vac line attached, at warm idle, pressure should be ~3-34 PSI.

the computer will adapt for pressure variances to get back to stoich - it is hard to run rich for very long with pressure set near stock (with stock injectors).

good luck.
 
You must log in or register to reply here.

Similar threads

D
Fuel Erratic Fuel Pressure 1985 GT
  • DienstXIV
  • Jan 14, 2026
  • Fox 5.0 Mustang Tech
Replies
16
Views
670
Fox 5.0 Mustang Tech Jan 16, 2026
AeroCoupe
K
88 speed density misfire and bucking
  • kush
  • May 29, 2026
  • Fox 5.0 Mustang Tech
Replies
9
Views
216
Fox 5.0 Mustang Tech Jun 8, 2026
DadLife0724
A
87 GT - Low Fuel Pressure Problem
  • Asbury
  • Jun 11, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
3
Views
112
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 11, 2026
Noobz347
Fuel Anyone know a part number for a 3/8" inlet/outlet efi quick connect fuel filter that would fit the stock foxbody location?
  • rednotch
  • Dec 8, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
285
Fox 5.0 Mustang Tech Dec 8, 2025
rednotch
A
Help ID - Turbo GT, SVO differences
  • aldoelmalo
  • Jun 2, 2026
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
0
Views
86
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Jun 2, 2026
aldoelmalo
A
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • Fox 5.0 Mustang Tech
Menu
Log in

Register

  • Forums
  • What's new
  • Media
  • Resources
  • Contact
  • Sponsor
X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?

X

Privacy & Transparency

We use cookies and similar technologies for the following purposes:

  • Personalized ads and content
  • Content measurement and audience insights

Do you accept cookies and these technologies?