a little oil on top of the LIM, where does it come from ?
#1
Senior Member
Posts like a Turbo
Thread Starter
Join Date: Dec 2004
Posts: 303
Likes: 0
Received 0 Likes
on
0 Posts
a little oil on top of the LIM, where does it come from ?
Looking at my neighbors 99 3800 motor with 70k on it and I see a small puddle of oil in one of the LIM valleys. The others seemed dry but where would this come from ? There isn't oil under pressure on the UIM or LIM is there ? The valve covers may seep a little but why did it pool only in one valley ?
#3
Senior Member
Posts like a Turbo
Thread Starter
Join Date: Dec 2004
Posts: 303
Likes: 0
Received 0 Likes
on
0 Posts
Nope not coolant, its oil and its black looking probably from heat, just not sure where it came from,maybe the valve cover gaskets, the uim is a 2001 going by the date on it but I dont believe the oil has anyhing to do with the uim ??
#6
RIP
True Car Nut
Yeah, if you have double-checked to be certain that it is oil, the valve cover gaskets is really the only other place it could come from. Here'* one reason why I suggested double-checking, besides personal experience as to where coolant would collect.
http://www.bonnevilleclub.com/forum/...882&highlight=
http://www.bonnevilleclub.com/forum/...882&highlight=
#7
Senior Member
Posts like a Camaro
Join Date: Dec 2005
Location: Clovis, CA
Posts: 851
Likes: 0
Received 0 Likes
on
0 Posts
I can say with a HIGH DEGREE OF CONFIDENCE, that it'* engine oil WICKING up the BOLT THREADS of the LIM.
The Cure:
1) Go to your local auto parts store and purchase a tube of PERMATEX 2B. It is a very dark brown thick cream.
2) Remove the LIM bolts one at a time (so as to not upset the torque across the LIM) and wipe the threads clean with a towel. Afterwards, you can wire brush the threads with a wire brush.
3) Apply a generous amount of 2B to the threads of each LIM bolt (just the ones that are leaking oil) and wipe off the excess with your finger.
4) Install the freshly coated LIM bolt into the threaded hole and tighten. I use a 10mm swivel socket with a long 1/4 drive extension with a 1/4 drive ratchet, but you can use a torque wrench if you want to. (132 inch pounds) or as tight as you can get it with a 1/4 drive ratchet.
5) You can clean up the oil residue down in the LIM valley with some gauze on the end of a pair of hemostats. You can substitute the hemostats with a long pair of needle nose pliers if need be.
Why does this happen? Because the 3800'* have an awsome oil pump with outstanding oil pressure.
Author'* Note: Permatex 2B is God'* gift to mechanics.
Make sure it says 2B.... not 1A like this photo.
The Cure:
1) Go to your local auto parts store and purchase a tube of PERMATEX 2B. It is a very dark brown thick cream.
2) Remove the LIM bolts one at a time (so as to not upset the torque across the LIM) and wipe the threads clean with a towel. Afterwards, you can wire brush the threads with a wire brush.
3) Apply a generous amount of 2B to the threads of each LIM bolt (just the ones that are leaking oil) and wipe off the excess with your finger.
4) Install the freshly coated LIM bolt into the threaded hole and tighten. I use a 10mm swivel socket with a long 1/4 drive extension with a 1/4 drive ratchet, but you can use a torque wrench if you want to. (132 inch pounds) or as tight as you can get it with a 1/4 drive ratchet.
5) You can clean up the oil residue down in the LIM valley with some gauze on the end of a pair of hemostats. You can substitute the hemostats with a long pair of needle nose pliers if need be.
Why does this happen? Because the 3800'* have an awsome oil pump with outstanding oil pressure.
Author'* Note: Permatex 2B is God'* gift to mechanics.
Make sure it says 2B.... not 1A like this photo.
#8
Senior Member
Posts like a Camaro
Join Date: Apr 2006
Location: Coon Rapids, Minnesota
Posts: 936
Likes: 0
Received 0 Likes
on
0 Posts
or take it apart and do it the right way by taking it apart, replace the intake gaskets, valve cover gaskets and be on your merry way.... but thats just me
#10
Senior Member
Posts like a Camaro
Join Date: Dec 2005
Location: Clovis, CA
Posts: 851
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by GreenMachine98
or take it apart and do it the right way by taking it apart, replace the intake gaskets, valve cover gaskets and be on your merry way.... but thats just me