Discovery II Talk about the Land Rover Discovery II within.
Sponsored by:
Sponsored by:

passenger side even cylinders running rich... old plugs on that side only black

Thread Tools
 
Search this Thread
 
  #1  
Old 03-14-2010, 10:06 PM
elboy0712's Avatar
Mudding
Thread Starter
Join Date: Jan 2010
Location: Colorado Springs, CO
Posts: 238
Received 1 Like on 1 Post
Default passenger side even cylinders running rich... old plugs on that side only black

passenger side plugs came out sooty and black and it was all 4 of the even cylinders.... i did previously have a misfire going on on 8 but that is resolved. also when i had my ignition coils off all the odd cylinder posts on the coils looked nice and shiny where as the even ones looked as though they had been burnt by the heat from the ignition circuit to the plug.. it was really weird
 

Last edited by elboy0712; 03-15-2010 at 07:23 PM.
  #2  
Old 03-15-2010, 07:24 PM
elboy0712's Avatar
Mudding
Thread Starter
Join Date: Jan 2010
Location: Colorado Springs, CO
Posts: 238
Received 1 Like on 1 Post
Default

bump!
 
  #3  
Old 03-15-2010, 08:24 PM
Spike555's Avatar
Team Owner
Join Date: Jun 2007
Location: Grand Rapids MI
Posts: 26,212
Likes: 0
Received 95 Likes on 72 Posts
Default

Sounds like a bad O2 sensor.
O2 sensors are what tells the ECU how much fuel is being used on that bank.
 
  #4  
Old 03-15-2010, 10:17 PM
elboy0712's Avatar
Mudding
Thread Starter
Join Date: Jan 2010
Location: Colorado Springs, CO
Posts: 238
Received 1 Like on 1 Post
Default

interesting, i did just replace those at the same time as my new plugs. think i should drive a few hundred miles then pull them to check for charring?
 
  #5  
Old 03-16-2010, 09:47 AM
okdiscoguy's Avatar
Camel Trophy
Join Date: Feb 2007
Location: Tulsa, OK
Posts: 4,959
Likes: 0
Received 10 Likes on 10 Posts
Default

Yup. You may want to call a local indy shop to have your adaptive memory erased so it will read the new sensors sooner.
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ZB-30
Discovery II
2
11-27-2013 07:47 PM
GiGi La Luz Ramone
Discovery II
12
08-31-2013 04:46 PM
Spencerfitch
Discovery II
8
05-03-2010 02:56 PM
jrmnw1
Discovery II
52
03-21-2010 06:33 PM
Tibbs
General Tech Help
1
10-02-2005 12:08 AM



Quick Reply: passenger side even cylinders running rich... old plugs on that side only black



All times are GMT -5. The time now is 05:09 AM.