• Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

oil in the intake runners??

  • Thread starter Thread starter 98blackstallion
  • Start date Start date Aug 26, 2007

98blackstallion

Member
Mar 30, 2005
602
0
17
mtn home arkansas
Aug 26, 2007
#1
  • Aug 26, 2007
  • #1
Ok guys I have another problem! I just pulled my intake off and I have oil in the intake ports of the heads, intake, and all over my intake gaskets???? I mean its everywhere just puddles of oil everywhere where the intake sits on the heads??? Whats causing this? I am taking the engine out to rebuild it even tho its only got about 2500 miles on an MMR forged 900 shortblock but i have bad luck with everything so it figures. Can someone tell me what the problem is or what could cause this?? Thank you guys



I have heard that the PCV can do this on a highly modded N/a or supercharged application so i checked my PCV lines and there doesnt look like there is any traces of oil in them. Maybe just a tad in the line that connects to the valve inself but thats it.


p.s. I have a highly modded 4.6 2v
 

Killa

Active Member
Jul 9, 2007
1,006
56
49
Aug 26, 2007
#2
  • Aug 26, 2007
  • #2
It happent to my mustang right now, I think its the ring or piston. Check out my thread.
 

jivepepper

Founding Member
Jun 19, 2002
776
5
18
Under a Sombrero. in WV.
Aug 27, 2007
#3
  • Aug 27, 2007
  • #3
It has to be coming from the pcv in the form of blow by. How's it performing at the track? You could do a compression check.
 

the98stang

Active Member
Aug 12, 2005
2,408
0
47
Clovis, CA
Aug 27, 2007
#4
  • Aug 27, 2007
  • #4
Yea tons of oil is not good. Is there any oil on the plugs, near the electrode? You might have worn rings. Either that, or they did not seat properly.
 

98blackstallion

Member
Mar 30, 2005
602
0
17
mtn home arkansas
Aug 27, 2007
#5
  • Aug 27, 2007
  • #5
Nope no oil on the plugs which is a good sign, I think its just excessive blow by but there isnt any oil in the pcv lines???
 

the98stang

Active Member
Aug 12, 2005
2,408
0
47
Clovis, CA
Aug 27, 2007
#6
  • Aug 27, 2007
  • #6
98blackstallion said:
Nope no oil on the plugs which is a good sign, I think its just excessive blow by but there isnt any oil in the pcv lines???
Click to expand...

Ok, I think the PCV is allowing oil to get into the system. Buy a new PCV from Ford and an oil separator to trap the oil in the intake system.
 
You must log in or register to reply here.

Similar threads

B
Leaking top of intake
  • Bertan
  • Jan 1, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
5
Views
316
1965 - 1973 Classic Mustangs -General/Talk- Jan 17, 2026
manicmechanic007
M
1997 Mustang GT Overheating Issue
  • Mustang1988!!
  • Sep 3, 2025
  • SN95 4.6L Mustang Tech
Replies
5
Views
256
SN95 4.6L Mustang Tech Sep 24, 2025
squeak93
N
Edelbrock 1405 Setup
  • nathantaylor200
  • Nov 4, 2025
  • Classic Mustang Specific Tech
Replies
3
Views
238
Classic Mustang Specific Tech Nov 5, 2025
nathantaylor200
N
1
Engine Motor swap from a 2003 Explorer
  • 1996mustang new
  • Oct 9, 2025
  • SN95 4.6L Mustang Tech
Replies
7
Views
589
SN95 4.6L Mustang Tech Oct 16, 2025
squeak93
A
Engine Genius installed oil filler above rocker arm…
  • afjLX
  • Mar 27, 2025
  • Fox 5.0 Mustang Tech
Replies
5
Views
511
Fox 5.0 Mustang Tech Mar 29, 2025
nicholase
Share:
Bluesky Email Share Link
  • Mustang Forums
  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L 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?