1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Oilly UIM and PVC

Thread Tools
 
Search this Thread
 
Old 04-09-2005, 09:59 PM
  #1  
Senior Member
True Car Nut
Thread Starter
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Likes: 0
Received 0 Likes on 0 Posts
95naSTA is on a distinguished road
Default Oilly UIM and PVC

So i took off my Upper Intake Manifold, High Velocity Intake Insert, to re-do the seal between the HVII and the UIM. Everything was really oilly. The UIM, top of the HVII, and the LIM especially around where the PVC goes was covered.
So what does that mean?
Old 04-09-2005, 10:12 PM
  #2  
Senior Member
True Car Nut
 
Lowrider0308's Avatar
 
Join Date: Aug 2004
Location: The South
Posts: 3,281
Likes: 0
Received 0 Likes on 0 Posts
Lowrider0308 is on a distinguished road
Default

maybe a UIM or UIM gasket failure? I'm not sure.
Old 04-09-2005, 10:12 PM
  #3  
Senior Member
Certified Car Nut
 
J Wikoff's Avatar
 
Join Date: Mar 2003
Posts: 12,433
Likes: 0
Received 2 Likes on 2 Posts
J Wikoff is on a distinguished road
Default

Is it inside the airways like oil is getting by the PCV? If so, it could mean you're getting more blowby than wanted.
Old 04-09-2005, 10:16 PM
  #4  
Senior Member
Posts like a Camaro
 
Bob Dillon's Avatar
 
Join Date: Feb 2005
Location: Gilroy, California
Posts: 922
Likes: 0
Received 6 Likes on 6 Posts
Bob Dillon is on a distinguished road
Default

Two guys here have sent me their ruined uppers for my sleeved repair idea. Both were very oily inside. I just used a can of engine cleaner and a 5-gallon bucket of hot, soapy water to clean them.

Also, when I replaced my throttle body gasket last month, the inside of the throttle blade was a sticky, oily mess, yet the car doesn't use a drop of oil.

I therefore think it'* a normal condition, and nothing to worry about.
Old 04-09-2005, 10:30 PM
  #5  
Senior Member
Certified Car Nut
 
1993 SLE's Avatar
 
Join Date: Oct 2003
Posts: 19,756
Likes: 0
Received 0 Likes on 0 Posts
1993 SLE is on a distinguished road
Default

ya when i did my TB gasket the back side of the TB and the UIM was very oily
Old 04-09-2005, 10:35 PM
  #6  
Senior Member
Posts like a Turbo
 
Ranger's Avatar
 
Join Date: Jul 2004
Location: Woodstock Ill.
Posts: 214
Likes: 0
Received 0 Likes on 0 Posts
Ranger is on a distinguished road
Default

As Bob Dillon said, it is normal. Blowby gasses are drawn into the manifold from the PCV and exhaust gasses are likewise from the EGR. When the engine is shut down these gasses are trapped in the UIM and then settle and condense on the walls as the engine cools. That is the reason you have to clean the TB occassionally. On the old carburated engines you had an air fuel mixture flowing through the manifold that kept it clean. On todays fuel injected engines fuel is delivered right to the intake port so there is nothing to clean the manifold. Perfectly normal and nothing to worry about.
Old 04-09-2005, 11:10 PM
  #7  
Senior Member
True Car Nut
Thread Starter
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Likes: 0
Received 0 Likes on 0 Posts
95naSTA is on a distinguished road
Default

cool. thanks guys
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Buddy
1992-1999
7
07-06-2007 02:16 PM
busa-max
2000-2005
2
09-19-2006 06:22 PM
SSEi_MN
Performance, Brainstorming & Tuning
13
04-30-2004 02:57 PM
GRZY4
1992-1999
1
04-26-2004 11:34 AM
valerka
1992-1999
13
03-15-2004 01:57 PM



Quick Reply: Oilly UIM and PVC



All times are GMT -4. The time now is 01:48 AM.