Engine seems to misfire a bit when it's cold or damp out
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 3 of 3
Northstar Engines and System Technical Discussion Discussion, Engine seems to misfire a bit when it's cold or damp out in Cadillac Engine Technical Discussion; After I changed my plugs/wires I noticed that the engine tends to "sneeze" when it's damp out, like I can ...
  1. #1
    weister42 is offline Cadillac Owners Enthusiast
    Automobile(s): 1998 Cadillac Deville Sedan
    Join Date
    Feb 2005
    Posts
    897

    Engine seems to misfire a bit when it's cold or damp out

    After I changed my plugs/wires I noticed that the engine tends to "sneeze" when it's damp out, like I can feel a minor jerk and my engine rpm goes down a little bit(25 to 50 rpm), I think this is a electrical connection problem since it doesn't do this when it's warm out, so what could cause this? My wires came with those silicone looking stuff to prime on the plugs but I didn't use it.

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    powerglide's Avatar
    powerglide is offline Cadillac Owners Connoisseur
    Join Date
    Sep 2003
    Location
    Hermosa Beach, CA
    Posts
    2,726

    Re: Engine seems to misfire a bit when it's cold or damp out

    Does it happen only at idle or even at speed?

  4. #3
    EcSTSatic's Avatar
    EcSTSatic is offline Cadillac Owners Connoisseur
    Automobile(s): 1999 STS - diamond white
    Join Date
    Dec 2004
    Location
    Wichita, KS
    Posts
    4,675

    Re: Engine seems to misfire a bit when it's cold or damp out

    Quote Originally Posted by weister42
    After I changed my plugs/wires I noticed that the engine tends to "sneeze" when it's damp out, like I can feel a minor jerk and my engine rpm goes down a little bit(25 to 50 rpm), I think this is a electrical connection problem since it doesn't do this when it's warm out, so what could cause this? My wires came with those silicone looking stuff to prime on the plugs but I didn't use it.
    You should apply the grease. It keeps the boots from welding to the plugs so you don't ruin them next time you pull them off.
    Dampness usually encourages "leaking" wires to do their thing. If you look under the hood at night on a damp night, bad wires can be seen arcing to metal or on another. Some guys mix saltwater and mist their wires if they suspect this condition.
    If this problem began right after you replaced the wires, check them out to be sure they are not defective.

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