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

Oil coming out of breather on 351W??

  • Thread starter Thread starter Blown95Cobra
  • Start date Start date Jul 13, 2005
B

Blown95Cobra

Member
Jun 6, 2004
58
0
6
Spring Hill, FL
Jul 13, 2005
#1
  • Jul 13, 2005
  • #1
I'm looking at a car that has a carbed 351W in it. It had oil coming out of the breathers on both valve covers. He said it was normal, what do you guys think?

Thanks, Frankie
 
1

1989MustangLX

New Member
Apr 7, 2005
118
0
0
Canada
Jul 13, 2005
#2
  • Jul 13, 2005
  • #2
Check to see if there are baffles in the valve covers. They may have been removed to make room for different rockers, if there were any at all.
 
B

Blown95Cobra

Member
Jun 6, 2004
58
0
6
Spring Hill, FL
Jul 13, 2005
#3
  • Jul 13, 2005
  • #3
They are aftermarket valve covers, iirc they are Ford Racing
 

281pony

Active Member
Aug 31, 2003
2,681
2
46
Oly, WA
Jul 13, 2005
#4
  • Jul 13, 2005
  • #4
im having the same problem with my 331. its from no baffles in my case.
 
B

Blown95Cobra

Member
Jun 6, 2004
58
0
6
Spring Hill, FL
Jul 13, 2005
#5
  • Jul 13, 2005
  • #5
does it do it so bad that the oil drips on the headers?
 
B

Boss 351

Here sthhhhhhhheeeve take a picthh of my man flowe
Jul 13, 2003
2,433
23
48
Canada
Jul 13, 2005
#6
  • Jul 13, 2005
  • #6
I had the same problem but had valve covers with baffles... also had .040 of ring end gap, and bad valve seals... You could see the oily smoke get out from the scoop on my car lol
 
B

Blown95Cobra

Member
Jun 6, 2004
58
0
6
Spring Hill, FL
Jul 13, 2005
#7
  • Jul 13, 2005
  • #7
I talked to local Mustang guy and he said its doing it cuz there isn't a PCV system, assuming the motor is good.
 
M

mustangman33

Member
Mar 13, 2004
262
0
16
Chicago, IL
Jul 13, 2005
#8
  • Jul 13, 2005
  • #8
Blown95Cobra said:
I talked to local Mustang guy and he said its doing it cuz there isn't a PCV system, assuming the motor is good.
Click to expand...


Exactly.
 

281pony

Active Member
Aug 31, 2003
2,681
2
46
Oly, WA
Jul 13, 2005
#9
  • Jul 13, 2005
  • #9
its from blowby, very common from what i understand.

i am just putting my stock valve covers back on, with a breather on the filler neck and the pcv line hooked back up.
 

Hissing Cobra

Founding Member
Jan 4, 2002
798
0
17
Massachusetts
Jul 13, 2005
#10
  • Jul 13, 2005
  • #10
Technically speaking, there should be a PCV valve in the passenger side valve cover. The driver's side should have a breather with a hose coming off of it that attaches to the air cleaner base. Thise would create a nice evactuation system, with the breather taking in clean air first through the air cleaner, then through the air cleaner in the breather and finally, into the engine. The PCV will also help. Of course, baffles are a must!

For what it's worth, I had the same problem on my old V-8 powered Pinto. I then changed the valve covers to baffled units and set my system up like the one described above and all of my breather problems were over.
 
B

Blown95Cobra

Member
Jun 6, 2004
58
0
6
Spring Hill, FL
Jul 14, 2005
#11
  • Jul 14, 2005
  • #11
thanks for the help guys I was a lil worried when the guy pulled up to my house and the car was smoking lol
 
You must log in or register to reply here.

Similar threads

J
Valve cover leak
  • joetiii
  • May 13, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
3
Views
332
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 14, 2025
General karthief
Engine Gas in my oil
  • limp
  • Jun 15, 2025
  • Fox 5.0 Mustang Tech
  • 2
Replies
35
Views
1K
Fox 5.0 Mustang Tech May 16, 2026
Mindseye007
M
Resolved PCV Tube and Valve Cover Breather Hole Locations
  • MDrisc
  • Sep 11, 2024
  • Fox 5.0 Mustang Tech
Replies
3
Views
1K
Fox 5.0 Mustang Tech Sep 22, 2024
MDrisc
M
D
Question about EGR valve, replacement, and a part on the valve.
  • DPP
  • May 9, 2026
  • SN95 V6 Mustang Tech
Replies
1
Views
146
SN95 V6 Mustang Tech May 23, 2026
DPP
D
B
Leaking top of intake
  • Bertan
  • Jan 1, 2026
  • 1965 - 1973 Classic Mustangs -General/Talk-
Replies
5
Views
327
1965 - 1973 Classic Mustangs -General/Talk- Jan 17, 2026
manicmechanic007
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?