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

Mystery Oil From Lower Intake Hose

  • Thread starter Thread starter MONDONGO-NICA
  • Start date Start date Sep 5, 2013

MONDONGO-NICA

Member
Aug 6, 2006
55
0
7
Chatsworth
Sep 5, 2013
#1
  • Sep 5, 2013
  • #1
Hello all I've been having hesitation when the car is hot. So while checking the vacuum hoses this hose (pic attached) popped off, possibly was already off. it is connected to the lower intake and it wraps around under the plenum. The lower intake where the hose connects is not threaded.

How is this hose supposed to be held in place? There is oil sprinkled everywhere. Is this hose supposed to have oil in it? thank you

 

Shakerhood

20+ Year Stangneter
Oct 28, 2004
3,356
208
114
Ohio
Sep 5, 2013
#2
  • Sep 5, 2013
  • #2
That is the PCV Valve and Rubber Grommet, just shove it back in place. After looking at those pics a 2nd time the rubber hose does not look factory to me, you may want to buy a new hose.
 

mikestang63

SN Certified Technician
Aug 27, 2012
11,606
8,859
214
In the garage
Sep 5, 2013
#3
  • Sep 5, 2013
  • #3
That is your PCV valve/hose. There are often fitment issues with the stock PCV grommet and aftermarket intakes. Clean it up, take some RTV and put it around the perimeter of the lip and then replace it in the hole. Let it set up. I don't see the screen for the PCV grommet which is an important part.
 

MONDONGO-NICA

Member
Aug 6, 2006
55
0
7
Chatsworth
Sep 5, 2013
#4
  • Sep 5, 2013
  • #4
great you guys rock i will replace the grommet and add the filter + RTV thanks. so is the oil normal?
 

madspeed

Colonel Mustard
Founding Member
Nov 29, 1999
8,914
1,332
204
a van down by the river
Sep 5, 2013
#5
  • Sep 5, 2013
  • #5
oil is normal, though your screen likely needs cleaned or replaced and that will catch alot of it
 

MONDONGO-NICA

Member
Aug 6, 2006
55
0
7
Chatsworth
Sep 5, 2013
#6
  • Sep 5, 2013
  • #6
great thank you
 

madspeed

Colonel Mustard
Founding Member
Nov 29, 1999
8,914
1,332
204
a van down by the river
Sep 6, 2013
#7
  • Sep 6, 2013
  • #7
ya man!
 

Shakerhood

20+ Year Stangneter
Oct 28, 2004
3,356
208
114
Ohio
Sep 6, 2013
#8
  • Sep 6, 2013
  • #8
Glad we could help ya!
 

MONDONGO-NICA

Member
Aug 6, 2006
55
0
7
Chatsworth
Sep 10, 2013
#9
  • Sep 10, 2013
  • #9
sorry guys i have a new issue. the PCV Valve filter fills the hole completely. there is no room for the grommet/PCV Valve/hose assembly. Am i missing something?
 

madspeed

Colonel Mustard
Founding Member
Nov 29, 1999
8,914
1,332
204
a van down by the river
Sep 10, 2013
#10
  • Sep 10, 2013
  • #10
got the wrong one....
 

aar0s

Founding Member
Dec 20, 1998
1,015
55
69
Sep 11, 2013
#11
  • Sep 11, 2013
  • #11
derp, nevermind.
 
You must log in or register to reply here.

Similar threads

H
Engine 1987 5.0 HO vacuum hose locations
  • harryhaber
  • Jun 20, 2025
  • Fox 5.0 Mustang Tech
Replies
2
Views
513
Fox 5.0 Mustang Tech Jun 21, 2025
limp
Intake vacuum lines
  • cnorman31
  • Mar 9, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
3
Views
772
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- Oct 15, 2025
Scrapla347
M
Progress Thread mnky99 2001 V6 evap core, ac compressor, heater core replacement
  • mnky99
  • Sep 5, 2025
  • 1996 - 2004 SN95 Mustang -General/Talk-
Replies
1
Views
515
1996 - 2004 SN95 Mustang -General/Talk- Sep 5, 2025
mnky99
M
E
Finished my Fox Hydroboost Install - Tips
  • Engineer Duane
  • Apr 9, 2025
  • 1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk-
Replies
4
Views
1K
1979 - 1995 (Fox, SN95.0, & 2.3L) -General/Talk- May 5, 2025
Engineer Duane
E
Engine 1990 LX 5.0L EFI Mustang Fuel Management Problems - HELP!
  • 5.0LXStanger
  • May 25, 2025
  • Fox 5.0 Mustang Tech
  • 2 3
Replies
45
Views
2K
Fox 5.0 Mustang Tech Jul 11, 2025
5.0LXStanger
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?