Jeep Cherokee Forum

Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

Spark jumping on crank pully

   
Old Jun 21, 2013 | 04:29 PM
Share
  #1  
XJOLIVE's Avatar
XJOLIVE
Thread Starter
Newbie
 
Joined: Jun 2013
Posts: 20
Likes: 0
From: Vancouver, WA.
Year: 1991
Model: Cherokee
Engine: 4L
Default Spark jumping on crank pully
So like the title says there is spark jumping on the crank pully, I just changed all the plug wires thinking that was it. I have never seen anything like this unless it was a bad wire. I have checked all my grounds. It runs fine just don't like that it sparks on the pulley makes me think that the plugs are getting a weak spark. I need some help.
Reply
0
Old Jun 21, 2013 | 04:54 PM
Share
  #2  
freegdr's Avatar
freegdr
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default
Motor runs fine ?Balancer coming apart hitting bolt heads causing spark.
Reply
0
Old Jun 21, 2013 | 04:59 PM
Share
  #3  
XJOLIVE's Avatar
XJOLIVE
Thread Starter
Newbie
 
Joined: Jun 2013
Posts: 20
Likes: 0
From: Vancouver, WA.
Year: 1991
Model: Cherokee
Engine: 4L
Default
Motor runs fine I'm thinking its the harmonic balancer.
Reply
0
Old Jun 21, 2013 | 05:06 PM
Share
  #4  
freegdr's Avatar
freegdr
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default
Originally Posted by XJOLIVE
Motor runs fine I'm thinking its the harmonic balancer.
Reply
0
Old Jun 21, 2013 | 05:26 PM
Share
  #5  
cruiser54's Avatar
cruiser54
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default
Look like this?
Attached Thumbnails Spark jumping on crank pully-harmonic-balancer-failure.jpg  
Reply
0
Old Jun 21, 2013 | 05:28 PM
Share
  #6  
freegdr's Avatar
freegdr
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default
No mines down a lot lower that had to be making some racket up there
Reply
0
Old Jun 21, 2013 | 05:32 PM
Share
  #7  
cruiser54's Avatar
cruiser54
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default
Originally Posted by freegdr
No mines down a lot lower that had to be making some racket up there
Yeah. They make a hell of a racket when they come off the crank and push the hood open, smartass.
Reply
0

Trending Topics

Old Jun 21, 2013 | 05:36 PM
Share
  #8  
freegdr's Avatar
freegdr
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default
Originally Posted by cruiser54
Yeah. They make a hell of a racket when they come off the crank and push the hood open, smartass.
Mr John and his horse ....
Reply
0
Old Jun 21, 2013 | 05:38 PM
Share
  #9  
cruiser54's Avatar
cruiser54
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default
Originally Posted by freegdr
Mr John and his horse ....
You referring to Uncle Jack?
Reply
0
Old Jun 21, 2013 | 05:43 PM
Share
  #10  
freegdr's Avatar
freegdr
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default
Originally Posted by cruiser54
You referring to Uncle Jack?
Yep that's it Uncle Jack off his horse. "Smart ***"
Reply
0
Old Jun 21, 2013 | 05:46 PM
Share
  #11  
cruiser54's Avatar
cruiser54
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default
Originally Posted by freegdr
Yep that's it Uncle Jack off his horse. "Smart ***"
LOL. Had a lasting impression, huh?
Reply
0
Old Jun 21, 2013 | 05:55 PM
Share
  #12  
freegdr's Avatar
freegdr
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default
Originally Posted by cruiser54
LOL. Had a lasting impression, huh?
I like horses...lol...
Reply
0
Old Jun 21, 2013 | 05:59 PM
Share
  #13  
cruiser54's Avatar
cruiser54
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default
Originally Posted by freegdr
I like horses...lol...
Hopefully not as much as Uncle Jack.............
Reply
0
Old Jun 21, 2013 | 06:01 PM
Share
  #14  
freegdr's Avatar
freegdr
CF Veteran
 
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default
Ok back on track your jerking this in the wrong direction ....lol...
Reply
0
Old Jun 21, 2013 | 06:05 PM
Share
  #15  
cruiser54's Avatar
cruiser54
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,579
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default
Originally Posted by freegdr
Ok back on track your jerking this in the wrong direction ....lol...
Punster. Any sparks on your crank?
Reply
0

Thread Tools
Search this Thread
Search this Thread:

Advanced Search

Advanced Search

All times are GMT -5. The time now is 10:59 AM.