Misfire on cylinder 6

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds

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 3 of 3
Northstar Engines and System Technical Discussion Discussion, Misfire on cylinder 6 in Cadillac Engine Discussion; Hello I am new here and I have am having a problem with my car. I have a 2005 Pontiac ...
  1. #1
    donky4444 is offline Cadillac Owners Member
    Automobile(s): 2005 Bonneville GXP
    Join Date
    Dec 2009

    Misfire on cylinder 6

    Hello I am new here and I have am having a problem with my car. I have a 2005 Pontiac Bonneville GXP with the Northstar 4.6 V8 in it. It is misfiring and I had it scanned. The code it is giving says misfire on cylinder 6. Can anybody give me some insight on this issue and also which cylinder is 6? I am guessing that the coil pack has gone bad and needs to be replaced. Any help would be great.

    Thank you.

  2. Remove Advertisements

  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS - 67,500 miles, 2014 Explorer XLT FWD
    Join Date
    Feb 2006
    MD Eastern Shore, Kent Island

    Re: Misfire on cylinder 6

    The front bank is 2,4,6,8, left to right. If you pull the coil cassette you may find a bit of oil in the plug wells. Normal - the wells are sealed by cam cover O-rings and they tend to weep. BUT, check all the plug boots for carbon tracks - if a boot or plug is tracked there will be a black stripe down the side of the plug. Y ou must replace the boot(s) in this case.

    www.rockauto.com, your car/year, Ignition, coil cassettes, ICM, wires/boots (some of the later listings put the boots under "wires", an incorrect file.)

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
    Join Date
    Jun 2004
    Woodstock Ill.

    Re: Misfire on cylinder 6

    If you find it carbon tracked, be sure to replace the plug as well or it will still misfire and carbon track the new boot.

  5. Remove Advertisements
    Cadillac Forums

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

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

Please enter a valid email address for yourself.

What Cadillac(s) do you own? (Or type NONE)

Please select your insurance company (Optional)

Your date of birth and age are displayed in several places on the forum. Only the administrator will have access to your date of birth should you choose to hide it via the privacy option below.


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.


Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts