• Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific Tech

miss on 2 cylinders

  • Thread starter Thread starter wildmandave
  • Start date Start date Oct 4, 2005

wildmandave

Member
Sep 15, 2005
70
2
8
largo,FL
Oct 4, 2005
#1
  • Oct 4, 2005
  • #1
I just installed a new 351 in my car and it has a miss in 2 cylinders. I've narrowed it down to #3 and #6 cylinders that are not producing power. It has spark and there is compression at both cylinders but I don't have a gauge to check how much. This guy I work with said I may have a bent pushrod or that it may have glazed the cylinder walls(what does that mean?). I have checked the firing order and even tried to pull the dist and put it back 180 degrees out to check that with no luck. It ran a little rich when first fired up but I turned the regulator down to 38 lbs. Any ideas I'm ready to shoot it!!!!!!!!!!!!!!!! Did not check for pulse at injectors but getting constant power at red wire. I've heard that injectors pulse on ground side of circuit. How do I check for pulse at injectors. If no pulse than what do I do?
 

TSWG00

Founding Member
Sep 9, 2002
202
0
0
Snohomish, WA
Oct 4, 2005
#2
  • Oct 4, 2005
  • #2
How did you narrow it down to what Cyl was missing? because I have a miss as well but I can't tell what Cyl is missing. I have not done a compression check yet but I guess I should.
 

95GTV8

New Member
Jul 25, 2005
386
3
0
Washington State
Oct 4, 2005
#3
  • Oct 4, 2005
  • #3
double or triple check the firing order?
 

wildmandave

Member
Sep 15, 2005
70
2
8
largo,FL
Oct 4, 2005
#4
  • Oct 4, 2005
  • #4
TSWG00 said:
How did you narrow it down to what Cyl was missing? because I have a miss as well but I can't tell what Cyl is missing. I have not done a compression check yet but I guess I should.
Click to expand...
Pulled wires on the cap while running with insulated spark plug wire pullers and listened for the engine to drop power. If no change than theres the dead cylinder.
 

wildmandave

Member
Sep 15, 2005
70
2
8
largo,FL
Oct 4, 2005
#5
  • Oct 4, 2005
  • #5
95GTV8 said:
double or triple check the firing order?
Click to expand...
Yes and pulled the distributor several times to check to make sure it was on time also.
 

94-302-vert

Active Member
Aug 16, 2004
1,947
2
36
NE CT
Oct 4, 2005
#6
  • Oct 4, 2005
  • #6
you tried switching those two plug wires too just for kicks?
 

wildmandave

Member
Sep 15, 2005
70
2
8
largo,FL
Oct 4, 2005
#7
  • Oct 4, 2005
  • #7
94-302-vert said:
you tried switching those two plug wires too just for kicks?
Click to expand...
Yes
 

TSWG00

Founding Member
Sep 9, 2002
202
0
0
Snohomish, WA
Oct 4, 2005
#8
  • Oct 4, 2005
  • #8
wildmandave said:
Pulled wires on the cap while running with insulated spark plug wire pullers and listened for the engine to drop power. If no change than theres the dead cylinder.
Click to expand...

Well Cool now I know how to check for my miss thanks :-D
 

HISSIN50

"How long does it take to get help in here?
15 Year Member
Nov 29, 1999
31,179
33
129
Oct 4, 2005
#9
  • Oct 4, 2005
  • #9
TSW, a cylinder balance test will also tell you which cylinders are dropping.
 

wildmandave

Member
Sep 15, 2005
70
2
8
largo,FL
Oct 6, 2005
#10
  • Oct 6, 2005
  • #10
Any efi techs out there?
 
You must log in or register to reply here.

Similar threads

Electrical 88 EEC Injectors batch firing ?
  • Dustin 86GT
  • Dec 8, 2025
  • Fox 5.0 Mustang Tech
Replies
10
Views
412
Fox 5.0 Mustang Tech Jan 8, 2026
gkomo
A
Check Engine codes jumping around
  • azactor
  • Jan 9, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
173
1996 - 2004 SN95 Mustang -General/Talk- Jan 10, 2026
gkomo
B
Engine Another no start after washing engine bay
  • bruno
  • Apr 26, 2026
  • Fox 5.0 Mustang Tech
  • 2
Replies
24
Views
601
Fox 5.0 Mustang Tech May 7, 2026
AeroCoupe
C
Engine Cylinder 5,,7, & 8 run significantly cooler than the other cylinders
  • Crisfixes
  • Sep 27, 2025
  • Fox 5.0 Mustang Tech
Replies
1
Views
225
Fox 5.0 Mustang Tech Sep 27, 2025
Noobz347
M
Help! 2003 GT misfire when hot
  • Modular03
  • Feb 10, 2026
  • SN95 4.6L Mustang Tech
Replies
4
Views
359
SN95 4.6L Mustang Tech Feb 13, 2026
Mustang5L5
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
  • 1994 - 1995 Specific 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?