Jaguar Forums - Jaguar Enthusiasts Forum

XK8 / XKR ( X100 ) 1996 - 2006

Engine misfire.

Thread Tools
 
Search this Thread
 
Old Jul 4, 2020 | 07:57 AM
Share
  #1  
Oldelance's Avatar
Thread Starter
|
Junior Member
Joined: Mar 2020
Posts: 23
Likes: 2
Default Engine misfire.
I have just replaced spark plugs, coils, fuel filter on my 2004 xk8 4.2l and have been running high octane fuel. I still notice that the car is skipping at normal operating speed , I don't notice a skip at idle. I sure could use some advice on the problem.
 
Reply
0
Old Jul 4, 2020 | 08:16 AM
Share
  #2  
George05's Avatar
Veteran Member
Joined: Aug 2019
Posts: 1,361
Likes: 418
From: London
Default
Originally Posted by Oldelance
I have just replaced spark plugs, coils, fuel filter on my 2004 xk8 4.2l and have been running high octane fuel. I still notice that the car is skipping at normal operating speed , I don't notice a skip at idle. I sure could use some advice on the problem.
Any codes ?
 
Reply
0
Old Jul 4, 2020 | 08:39 AM
Share
  #3  
NBCat's Avatar
Joined: Jan 2012
Posts: 6,068
Likes: 2,983
From: Newport Beach, California
Default
Originally Posted by Oldelance
I have just replaced spark plugs, coils, fuel filter on my 2004 xk8 4.2l and have been running high octane fuel. I still notice that the car is skipping at normal operating speed , I don't notice a skip at idle. I sure could use some advice on the problem.
+1 on knowing DTCs, if any.

This is posted in the wrong forum. Should be in the X100 forum if the vehicle is a 2004MY.
 
Reply
0
Old Jul 4, 2020 | 09:06 AM
Share
  #4  
Oldelance's Avatar
Thread Starter
|
Junior Member
Joined: Mar 2020
Posts: 23
Likes: 2
Default
Originally Posted by George05
Any codes ?
no codes. Check engine light come on sporadically. When it's off I don't notice the skipp. When on I do.
 
Reply
0
Old Jul 4, 2020 | 09:46 AM
Share
  #5  
Stuart S's Avatar
Veteran Member
15 Year Member
Community Builder
Loved
Community Favorite
Joined: Aug 2010
Posts: 10,116
Likes: 7,122
From: Atlanta suburbs
Default
Originally Posted by NBCat
... This is posted in the wrong forum. Should be in the X100 forum if the vehicle is a 2004MY.
Oldelance,
You're in the X150 Forum, for 2007-2015 XK/XKR models. You should be here: https://www.jaguarforums.com/forum/xk8-xkr-x100-17/
 
Reply
0
Old Jul 4, 2020 | 12:54 PM
Share
  #6  
George05's Avatar
Veteran Member
Joined: Aug 2019
Posts: 1,361
Likes: 418
From: London
Default
Originally Posted by Oldelance
no codes. Check engine light come on sporadically. When it's off I don't notice the skipp. When on I do.
Get a code reader/scanner on it
 
Reply
0
Old Jul 5, 2020 | 11:51 AM
Share
  #7  
JagV8's Avatar
Veteran Member
15 Year Member
Liked
Loved
Community Favorite
Joined: May 2009
Posts: 27,524
Likes: 4,911
From: Yorkshire, England
Default
Originally Posted by Oldelance
no codes. Check engine light come on sporadically.
Should be codes, then. Sounds like your tool is failing to report them. They're kept AGES so they'll be there.

Also, look at the fuel trims.
 
Reply
0

Trending Topics

Old Jul 5, 2020 | 01:24 PM
Share
  #8  
GGG's Avatar
GGG
10 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2011
Posts: 120,439
Likes: 17,009
From: Durham, UK
Default
Originally Posted by Oldelance
I have just replaced spark plugs, coils, fuel filter on my 2004 xk8 4.2l and have been running high octane fuel. I still notice that the car is skipping at normal operating speed , I don't notice a skip at idle. I sure could use some advice on the problem.
I've moved your question from X150 (2006 - 2014) to X100 (1996 - 2006) forum. This is the place to post technical questions about your 2004 XK8.

Graham
 
Reply
0
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Misfire?
Brandon Wright
XJ XJ6 / XJR6 ( X300 )
7
Jan 15, 2022 07:24 AM
Misfire on 2004 XJ8
aphorton
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
23
Aug 10, 2017 05:31 PM
Misfire
Mooch1983
S-Type / S type R Supercharged V8 ( X200 )
4
Feb 9, 2015 10:13 AM
Engine Misfiring
rycymru
X-Type ( X400 )
2
Aug 10, 2010 02:46 AM
IDLE RPM FLUCTUating
mel
S-Type / S type R Supercharged V8 ( X200 )
8
Feb 22, 2010 04:34 PM
Back to Subforum
XK8 / XKR ( X100 )
View Next Unread
XK8 Electrical Failure... Bad ECU?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



Advanced Search

All times are GMT -5. The time now is 08:18 AM.