N* 4.6 Bad Compression, Help Please
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 4 of 4
Northstar Engines and System Technical Discussion Discussion, N* 4.6 Bad Compression, Help Please in Cadillac Engine Technical Discussion; Hello All, I have a 2004 Deville (135,000 miles) w/ a 4.6 N*. It was running very poorly and throwing ...
  1. #1
    Hawk996 is offline Cadillac Owners Member
    Automobile(s): 2004 Deville
    Join Date
    Apr 2013
    Age
    40
    Posts
    3

    N* 4.6 Bad Compression, Help Please

    Hello All, I have a 2004 Deville (135,000 miles) w/ a 4.6 N*. It was running very poorly and throwing a misfire code on cylinder 2. I did a compression check and have 60 lbs on 2, 80 lbs on 4, 80 lbs on 6 and 120 lbs on 8. All the odd cylinders are 150 lbs or over.

    I am a decent back yard mechanic and have no problems changing timing belts, water pumps etc.. but feel like this may be beyond my scope. I am currently living in a pretty rural area and none of the garages around will touch a N* I called and spoke to a guy from N* Performance and he said that I need to pull off the valve cover and see whats going on. His bet it stuck lifters? I have never had a head off an engine before but my first thought was head gasket?

    Just trying to figure out my best option for the next step I guess. Im in NE Pennsylvania and close to Southern tier NY / Binghamton, NY if that helps, maybe someone can recommend a Cadillac garage. I am a bit leery of dealers and obviously am looking to get this fixed as affordable as possible.

    I really like my Cadillac, its near mint body and interior.

    Thanks...

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    RippyPartsDept's Avatar
    RippyPartsDept is offline Hi, I'm Chris - Please Read My Signature
    Automobile(s): 1999 DeVille "Bianca" (white/blue, VIN-Y, 160k)
    Join Date
    Sep 2007
    Location
    Wilmington, NC
    Age
    34
    Posts
    14,006

    Re: N* 4.6 Bad Compression, Help Please

    JoeTahoe is north of you in NY .... he's done about 4 of these jobs ... let me see if I can find him for you
    Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at Rippy Automotive
    Rippy is a Cadillac, Hummer, Saturn & Saab dealership & Official Saab Service Center
    ~~ Family owned and operated in Wilmington, NC since 1946 ~~
    We offer all forum members discounts on parts and freight
    phone: 800-RIPPY-22
    <-- insert standard boilerplate about posts not necessarily representing my employer, etc -->

  4. #3
    JoeTahoe is offline Cadillac Owners Fanatic
    Automobile(s): 2001 GMC SLT,Tahoe, Malibu LTZ, 99 STS studded with NP
    Join Date
    Jul 2010
    Location
    Central, NY
    Age
    46
    Posts
    462

    Re: N* 4.6 Bad Compression, Help Please

    I sent you a PM Hawk

  5. #4
    98eldo32v's Avatar
    98eldo32v is offline Cadillac Owners Connoisseur
    Automobile(s): 98 eldo/KD54 w/N37,T96,QA1,D55,DS3,U1Z. U3R next
    Join Date
    Apr 2010
    Posts
    1,908

    Re: N* 4.6 Bad Compression, Help Please

    There is a TSB about this possible condition......

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