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

oil on spark plug

  • Thread starter Thread starter TorontoJohn
  • Start date Start date Feb 4, 2006
T

TorontoJohn

New Member
Sep 8, 2004
51
1
0
Feb 4, 2006
#1
  • Feb 4, 2006
  • #1
pulled out 2 spark plugs, the 1st one in each bank. The passenger side plug is nice and clean but the driver side is not; it has oil on it. Not on the threads or on the firing part but above the threads. How would oil get there and is it a sign of a head gasket problem?
 

bill302

Active Member
Nov 2, 2005
2,131
1
46
alabama,gadsden
Feb 4, 2006
#2
  • Feb 4, 2006
  • #2
valve cover leak.
 
T

TorontoJohn

New Member
Sep 8, 2004
51
1
0
Feb 4, 2006
#3
  • Feb 4, 2006
  • #3
ok, I belive it since another person told me that aswell.

How would a valve cover leak allow the oil to get above the threads though?
 

bill302

Active Member
Nov 2, 2005
2,131
1
46
alabama,gadsden
Feb 4, 2006
#4
  • Feb 4, 2006
  • #4
oil leaks out valve cover and flows down into sparkplug area and penetrates into the top of the sparkplug threads heat and wind turbulance from movement and cooling fan helps oil flow everywhere depending on the size of the leak although yours dont seem too bad after a hard run you should be able to lift the hood and smell oil burning.
 
T

TorontoJohn

New Member
Sep 8, 2004
51
1
0
Feb 4, 2006
#5
  • Feb 4, 2006
  • #5
ya there is sometimes a strange smell inside the car. It doesn't quite have the acrid smell of burnt oil but it could just be mixed with other smells.

I have edelbrock valve covers and they look like a bitch to get off(because the bolts are really close to the covers). What gaskets would I use for this?
 

bill302

Active Member
Nov 2, 2005
2,131
1
46
alabama,gadsden
Feb 4, 2006
#6
  • Feb 4, 2006
  • #6
i would use fel-pro or mr. gasket rubber gasket (not cork) call a auto parts store it will use same as stock.and torque valve cover bolts in proper tightning sequence to 10-15 ft lbs. what year model do you have and any mods?
 
T

TorontoJohn

New Member
Sep 8, 2004
51
1
0
Feb 4, 2006
#7
  • Feb 4, 2006
  • #7
I have a 91 gt motor but I swapped it for carb(i know sacrilgious). It has a b303 cam and, prfrmr rpm intake, msd coil, dist. and ignition and ud pulleys. Nothing too crazy.
 

bill302

Active Member
Nov 2, 2005
2,131
1
46
alabama,gadsden
Feb 5, 2006
#8
  • Feb 5, 2006
  • #8
cool ya my info is accurate according to your mods. make yourself a signature like i have at the bottom of my post it will help people help you if you don't know how to do it post questions in 5.0 talk and we can help you there.
 

mbsprinks281

Member
Apr 19, 2005
58
2
9
Lockport, IL
Feb 5, 2006
#9
  • Feb 5, 2006
  • #9
I agree. Sounds like a valve cover leak. Get the new rubber gaskets and torque accordingly.
 
T

TorontoJohn

New Member
Sep 8, 2004
51
1
0
Feb 5, 2006
#10
  • Feb 5, 2006
  • #10
excellent...thanks
 

90mustangGT

I felt sorry for girls because
Founding Member
Jan 15, 2002
2,773
17
89
Dallas, GA
Feb 5, 2006
#11
  • Feb 5, 2006
  • #11
I know they cost more, but the rubberized gaskets with the metal core inside them are worth it, not only are the better but they are reusable. When you retorque, just past snug is all you need, any more will distort or even split the new gasket. While your in there, check the PCV and screen, PCV's being clogged up will lead to oil leaks.
 
You must log in or register to reply here.

Similar threads

K
Resolved Weird sound coming from a freshly rebuilt 5.0L
  • karhoot
  • Jun 24, 2026
  • Fox 5.0 Mustang Tech
Replies
7
Views
212
Fox 5.0 Mustang Tech Jun 27, 2026
Mac131
J
'04 3.8L V6 mineral deposits and oil on #3 cylinder. Does it need a rebuild or something simpler?
  • joeybuddy96
  • Mar 18, 2026
  • SN95 V6 Mustang Tech
Replies
7
Views
298
SN95 V6 Mustang Tech Jul 24, 2026
gkomo
P
Resolved Spark plug location
  • Ptanner
  • May 17, 2026
  • 2024+ (S650) Mustang -General/Talk
Replies
1
Views
162
2024+ (S650) Mustang -General/Talk May 18, 2026
Ptanner
P
Who the hell puts the wrong spark plugs in a 3.8L?
  • snowstang
  • Mar 25, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
12
Views
446
1996 - 2004 SN95 Mustang -General/Talk- Apr 3, 2026
LILCBRA
96 GT 4.6 w/ dirty spark plug well
  • Mustang Momma
  • Apr 7, 2026
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
3
Views
132
1996 - 2004 SN95 Mustang -General/Talk- Apr 9, 2026
LILCBRA
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?