Fuel injector leaking at rail contact
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 6 of 6
Northstar Engines and System Technical Discussion Discussion, Fuel injector leaking at rail contact in Cadillac Engine Technical Discussion; I just replaced all my fuel injectors with re-manufactured injectors. After replacing everything looked great and ran great. Well the ...
  1. #1
    greek97 is offline Cadillac Owners Member
    Join Date
    Jan 2004
    Posts
    3

    Fuel injector leaking at rail contact

    I just replaced all my fuel injectors with re-manufactured injectors. After replacing everything looked great and ran great. Well the next morning I started my car and I started smelling gas. My car turned off automatically and when I looked under the hood, I noticed gas located near the back rail. I noticed that gas was leaking from the connection of the injector and the rail. I also noticed that the re-manufactured injectors had a gasket already on them so I can't see that being the problem. Should there be a second gasket within the rail ? Please help . Does anyone have a schematic of the assembly for the fuel injectors?

    Car model:

    97 Cadillac ETC
    4.6L engine

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    eldorado1 is offline Cadillac Owners Connoisseur
    Join Date
    Feb 2004
    Location
    FL
    Posts
    2,250

    Re: Fuel injector leaking at rail contact

    Pull the rail off, and pull the offending injector off. Remove the o-ring on the top of the injector, and check the fuel rail to see if there are any o-rings stuck up in the hole. Remove them all. Go to nearest GM dealership, and purchase a injector o-ring kit. Reinstall "fat" o-ring on top (fuel rail side), and "skinny" o-ring on bottom (manifold side). I'd recommend replacing them for all of the injectors, but choice is yours. btw - make sure you lube them with something. I typically use fresh engine oil, but others might suggest something else... Good luck,

  4. #3
    greek97 is offline Cadillac Owners Member
    Join Date
    Jan 2004
    Posts
    3
    Thread Starter

    Re: Fuel injector leaking at rail contact

    I will definitely give that a shot. Thanks for your help!!!!

  5. #4
    BeelzeBob's Avatar
    BeelzeBob is offline I'm a Cadillac Fanatic!
    Join Date
    Dec 2002
    Location
    Fort Lauderdale, Florida
    Age
    50
    Posts
    9,577

    Re: Fuel injector leaking at rail contact

    Sounds like you need to pull the rail off and inspect that seal at the injector. I would also inspect the rail carefully for cracks or any splits. The process of R&R'ing the rail previously may have stressed it and cracked it or something.....or damaged it in some way.

  6. #5
    eldorado1 is offline Cadillac Owners Connoisseur
    Join Date
    Feb 2004
    Location
    FL
    Posts
    2,250

    Re: Fuel injector leaking at rail contact

    Quote Originally Posted by bbob
    Sounds like you need to pull the rail off and inspect that seal at the injector. I would also inspect the rail carefully for cracks or any splits. The process of R&R'ing the rail previously may have stressed it and cracked it or something.....or damaged it in some way.
    Can the y2k models use the stainless fuel rail? Probably not since they use a different 'beauty cover' bolt scheme, but thought I'd ask....

    EDIT*****Nevermind... Just read you have a 97... don't know why I thought you had a 2000 model... If you haven't already, upgrade to the stainless rail. The plastic 95-97 ones have been recalled. It's free of charge, PLUS, you get new o-rings as well! Save yourself $10 (I think that's how much the o-ring kit was)

  7. #6
    greek97 is offline Cadillac Owners Member
    Join Date
    Jan 2004
    Posts
    3
    Thread Starter

    Re: Fuel injector leaking at rail contact

    Found the problem. It seem that the O-rings that came with the re-manufactured injectors were cracked. After replacing with AC Delco certified O-rings everything worked great. NO LEAKING. Thanks for all your help.

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