Help on changing valve cover gaskets? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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.

Reply
 
 
 
Thread Tools Search this Thread
Old 07-05-2009, 12:13 AM   #1
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: May 2009
Location: OHIO
Posts: 360
Thanks: 0
Thanked 0 Times in 0 Posts
trixster68 is on a distinguished road
Default Help on changing valve cover gaskets?

I have a bad oil leak on Bonnie she is back from the shop and so far I have only had the front suspension repaired. She is leaking oil badly in the front valve cover gasket and leaking in the rear gasket also. First question where do the grommets fit into this? Under the screws on the valve cover or between the screws and the valve covers? How do the new gaskets go in is there a groove to place them into? Do they go on the engine first and then the valve cover or do they go into the cover and then onto the engine? On the back valve cover what do I need to take off to get this one fixed as well? Do I have to take off the fuel lines and unplug the spark plug wires and power steering hose etc wires to the O2 sensor? I would like any hints and tips on how to make this pain free as possible and is any walk troughs or tips would be great! Thanks guy'* after this she is off to the body shop, I just didn't want to catch her on fire because of oil running out the gaskets. I will let you guy'* know how everything went here in a little while so far not to bad getting her all better. Thanks all.
trixster68 is offline   Reply With Quote
Old 07-05-2009, 12:46 AM   #2
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Not sure on the specifics of your year. But the gasket goes in a grove on the cover, and is then placed on the head. The grommets go between the bolt and the cover. Check the torque specs and make sure that is what you use. Don't over torque the bolts.
Danthurs is offline   Reply With Quote
Old 07-05-2009, 12:50 AM   #3
Senior Member
True Car Nut
 
Purplehazeir's Avatar
 
Join Date: Sep 2008
Location: Arlington, WA
Posts: 7,979
Thanks: 0
Thanked 1 Time in 1 Post
Purplehazeir is on a distinguished road
Default

Make certain that you get as much oil off the top of the head where the valve cover gasket seals. This will help the seal to adhere to the metal and make for a leak free surface contact. Also, you may want to use some copper torque spray or a dab of silicone in all four corners and allong the center top and bottom. This will keep the gasket from falling off the valve cover as you go to wiggle it into place.
Purplehazeir is offline   Reply With Quote
Old 07-05-2009, 12:51 AM   #4
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: May 2009
Location: OHIO
Posts: 360
Thanks: 0
Thanked 0 Times in 0 Posts
trixster68 is on a distinguished road
Default

FSM says 88 inch lbs thanks Dan.
trixster68 is offline   Reply With Quote
Old 07-05-2009, 12:55 AM   #5
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: May 2009
Location: OHIO
Posts: 360
Thanks: 0
Thanked 0 Times in 0 Posts
trixster68 is on a distinguished road
Default

Thanks PurpleHazeir
trixster68 is offline   Reply With Quote
Old 07-05-2009, 06:51 PM   #6
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: May 2009
Location: OHIO
Posts: 360
Thanks: 0
Thanked 0 Times in 0 Posts
trixster68 is on a distinguished road
Default

Well I got the front one done 45 minutes not to bad it seems to be fine and looks like no leaks so far. The back one? Where to start it is covered with everything in the engine so I am going to have to put some thought into this one. That might be my next adventure here soon or the shops? Don't know yet but it is getting better and then its time for some body shop action I do believe. I'll let you all know and thanks.
trixster68 is offline   Reply With Quote
Old 07-05-2009, 07:36 PM   #7
Senior Member
True Car Nut
 
Black Pearl's Avatar
 
Join Date: Apr 2009
Location: STC, MN
Posts: 3,301
Thanks: 0
Thanked 1 Time in 1 Post
Black Pearl is on a distinguished road
Default

The rear one takes patience. Your plug wires come off the plugs. Fuel lines stay on. Strut tower bar comes off. A few other small things get removed or shifted. A little wiggle and jiggle, voila! I had both mine off painted and on in around three hours
Black Pearl is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1992 88 valve cover gaskets, help? Hollow Oldsmobile 3 04-04-2015 04:30 PM
Changing LIM & Valve Cover gaskets thefloyd 2000-2005 2 03-22-2009 09:17 PM
Changing Valve Cover Gaskets Lowrider0308 1992-1999 12 03-12-2009 02:33 PM
Valve cover gaskets boott 2000-2005 1 04-17-2005 05:32 PM
Valve Cover Gaskets -- Pairs from GMPD? Allmachtige 1992-1999 3 07-27-2004 11:09 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:37 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.