Oil Leak, 92, 4.9
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 8 of 8
HT4100 4.1, 4.5, 4.9 Discussion, Oil Leak, 92, 4.9 in Cadillac Engine Technical Discussion; Hoping to save some time in finding an oil leak on 92 Eldo with the 4.9. (137K) Won't leak at ...
  1. #1
    B. Fitzgerald is offline Cadillac Owners Member
    Join Date
    Sep 2003
    Location
    Thornton, CO
    Posts
    14

    Oil Leak, 92, 4.9

    Hoping to save some time in finding an oil leak on 92 Eldo with the 4.9. (137K)
    Won't leak at idle or standing still. Only when going down the freeway. Comes from somewhere on the front of the engine.(right side of car) It is not coming from the pan or front crank seal. Seems to be higher up. Tried dye but it just sprays everywhere. Has anybody else had this problem? Is the intake manifold prone to this? Thanks, bf

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    elwesso's Avatar
    elwesso is offline Cadillac Owners Master
    Automobile(s): 2005 CTS-V, 1994 Infiniti Q45
    Join Date
    Jan 2003
    Location
    Indiana
    Posts
    7,668

    Re: Oil Leak, 92, 4.9

    Im not so sure whats going on, but it sounds like there is some external leakage, my best guess would be from oil coolers.....

  4. #3
    B. Fitzgerald is offline Cadillac Owners Member
    Join Date
    Sep 2003
    Location
    Thornton, CO
    Posts
    14

    Re: Oil Leak, 92, 4.9

    Quote Originally Posted by elwesso
    Im not so sure whats going on, but it sounds like there is some external leakage, my best guess would be from oil coolers.....
    Thanks,

    Oil cooler lines are all at the rear of the engine. (left side) I talked to a Cadillac Service Dept. and they said that they change the timing chain case seal on at lease one 4.9 per day. Sounds like it was my turn. Not having much experience with these I hadn't run across that before. Now we all know. Thanks, I'll be back with another question on a later date. fitz

  5. #4
    92_Seville_89's Avatar
    92_Seville_89 is offline Cadillac Owners Member
    Automobile(s): 92 seville STS
    Join Date
    Oct 2007
    Posts
    16

    Re: Oil Leak, 92, 4.9

    i had the same Problem....by my car it was the line wich goes into the front radiator.... i replaced the seal with an "O-Ring" and the Problem was solved

  6. #5
    FrankC's Avatar
    FrankC is offline Cadillac Owners Member
    Automobile(s): '86 Eldorado, 4.1L, 180k
    Join Date
    Jan 2007
    Location
    Shawnee, Kansas
    Age
    65
    Posts
    40

    Re: Oil Leak, 92, 4.9

    I had oil leak on my 86 Eldorado Ht4100. I changed out the pan gasket and front seal ... didn't help. Finally found that one of the O rings on the cooler lines where the lines attached to the engine was hard and leaking. Very easy to fix. Very difficult to find.

  7. #6
    HUF's Avatar
    HUF
    HUF is offline Cadillac Owners Connoisseur
    Automobile(s): 1995 FWB 100,*** miles CURRENT. 1991 Seville 175,000 SOLD
    Join Date
    Dec 2005
    Location
    MA
    Age
    55
    Posts
    2,002

    Re: Oil Leak, 92, 4.9

    Also check the oil filter adapter - a known source of leaks. Because it is on top of the engine the leaked oil can end up anywhere.

  8. #7
    TheeSlowPoke is offline Cadillac Owners Member
    Automobile(s): Cadillac 2000 DTS & 1999 Lexus LS400
    Join Date
    Oct 2006
    Location
    Minnesota
    Posts
    68

    Re: Oil Leak, 92, 4.9

    My '94 started leaking at the rear(drivers side) of the engine (just out of the blue) about a month, or so, ago. I suspected the lines between the filter adapter and the oil cooler in the radiator but, although the lines had oil on them, I was not able to identify the leak.

    I didn't want to mess with the connections on the radiator for fear of breaking the radiator. Is this a valid concern? They were tight, I just didn't put a whole lot of ft-lbs on them.

    I couldn't get a wrench on the oil filter adapter housing bolt nearest the engine. I guess if I pulled the sending unit off, I could get to it.???

  9. #8
    behind-bars is offline Cadillac Owners Connoisseur
    Automobile(s): 93 Sedan Deville 4.9L
    Join Date
    Sep 2005
    Location
    Texas
    Posts
    1,005

    Re: Oil Leak, 92, 4.9

    Quote Originally Posted by TheeSlowPoke View Post
    My '94 started leaking at the rear(drivers side) of the engine (just out of the blue) about a month, or so, ago. I suspected the lines between the filter adapter and the oil cooler in the radiator but, although the lines had oil on them, I was not able to identify the leak.

    I didn't want to mess with the connections on the radiator for fear of breaking the radiator. Is this a valid concern? They were tight, I just didn't put a whole lot of ft-lbs on them.

    I couldn't get a wrench on the oil filter adapter housing bolt nearest the engine. I guess if I pulled the sending unit off, I could get to it.???
    I just replaced my radiator and had to take the lines off, wasnt to bad, just make sure you get a good tight grip on them and dont make a sudden jerk, but go smoothly, very easy to round the edges on one of the bolts. If your careful the radiator should be fine.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting