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.

Another unsolvable misfire

Thread Tools
 
Search this Thread
 
Old Sep 2, 2016 | 04:27 PM
Share
  #16  
XJwonders's Avatar
XJwonders
CF Veteran
Premium Member
 
Joined: Jan 2013
Posts: 19,219
Likes: 45
From: west chester, pa
Year: 1999
Engine: 4.0
Default
Originally Posted by $200xjbuild
I should also note that the jeep has perfect compression on the 5 other cylinders.
same as mine. It's misfiring in cylinder number one due to low compression
Reply
0
Old Sep 2, 2016 | 04:29 PM
Share
  #17  
$200xjbuild's Avatar
$200xjbuild
Thread Starter
Junior Member
 
Joined: Apr 2015
Posts: 72
Likes: 0
Default
Originally Posted by XJwonders
same as mine. It's misfiring in cylinder number one due to low compression
does yours sometimes run on that one cylinder for a few minutes?
Reply
0
Old Sep 2, 2016 | 04:33 PM
Share
  #18  
XJwonders's Avatar
XJwonders
CF Veteran
Premium Member
 
Joined: Jan 2013
Posts: 19,219
Likes: 45
From: west chester, pa
Year: 1999
Engine: 4.0
Default
Originally Posted by $200xjbuild
does yours sometimes run on that one cylinder for a few minutes?
what do you mean?
Reply
0
Old Sep 2, 2016 | 04:37 PM
Share
  #19  
$200xjbuild's Avatar
$200xjbuild
Thread Starter
Junior Member
 
Joined: Apr 2015
Posts: 72
Likes: 0
Default
Originally Posted by XJwonders
what do you mean?
Mine from time to time will randomly run on the bad cylinder
Reply
0
Old Sep 2, 2016 | 04:41 PM
Share
  #20  
$200xjbuild's Avatar
$200xjbuild
Thread Starter
Junior Member
 
Joined: Apr 2015
Posts: 72
Likes: 0
Default
Originally Posted by XJwonders
what do you mean?
If it helps, later i can put a video of it on YouTube and attach a link.
Reply
0
Old Sep 2, 2016 | 04:41 PM
Share
  #21  
XJwonders's Avatar
XJwonders
CF Veteran
Premium Member
 
Joined: Jan 2013
Posts: 19,219
Likes: 45
From: west chester, pa
Year: 1999
Engine: 4.0
Default
Originally Posted by $200xjbuild
If it helps, later i can put a video of it on YouTube and attach a link.
it wouldn't help, I'm deaf. Lol
Reply
0
Old Sep 2, 2016 | 04:42 PM
Share
  #22  
$200xjbuild's Avatar
$200xjbuild
Thread Starter
Junior Member
 
Joined: Apr 2015
Posts: 72
Likes: 0
Default
Originally Posted by XJwonders
it wouldn't help, I'm deaf. Lol
Dang that must suck
Reply
0
Old Sep 2, 2016 | 04:53 PM
Share
  #23  
XJwonders's Avatar
XJwonders
CF Veteran
Premium Member
 
Joined: Jan 2013
Posts: 19,219
Likes: 45
From: west chester, pa
Year: 1999
Engine: 4.0
Default
Originally Posted by $200xjbuild
Dang that must suck
LOL. Not really. I'm more at peace because I won't have to hear people and I sleep better at night
Reply
0
Old Sep 2, 2016 | 04:55 PM
Share
  #24  
$200xjbuild's Avatar
$200xjbuild
Thread Starter
Junior Member
 
Joined: Apr 2015
Posts: 72
Likes: 0
Default
Originally Posted by XJwonders
LOL. Not really. I'm more at peace because I won't have to hear people and I sleep better at night
Good point
Reply
0
Old Sep 3, 2016 | 08:55 PM
Share
  #25  
s346k's Avatar
s346k
CF Veteran
Premium Member
10 Year Member
 
Joined: Feb 2012
Posts: 2,282
Likes: 18
From: central IN
Year: 1997
Engine: 4.0
Default
possibly a lifter? I had the cup turn on the top of one and it hung the valve open just enough to make it randomly misfire on that cylinder. I'd follow cruisers suggestion and pull the head.
Reply
0
Old Sep 4, 2016 | 05:33 AM
Share
  #26  
Bustedback's Avatar
Bustedback
CF Veteran
 
Joined: Feb 2010
Posts: 12,367
Likes: 23
From: Oroville, CA
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
Default
Originally Posted by s346k
possibly a lifter? I had the cup turn on the top of one and it hung the valve open just enough to make it randomly misfire on that cylinder. I'd follow cruisers suggestion and pull the head.
This would be the most likely answer.
Reply
0
Old Sep 4, 2016 | 11:41 AM
Share
  #27  
Waynerd's Avatar
Waynerd
CF Veteran
10 Year Member
 
Joined: Jan 2015
Posts: 1,469
Likes: 26
From: North canaan Connecticut
Year: 01, 99, 98, 98,98
Model: Cherokee
Engine: 4.0
Default
Wasn't 96 the year they switched to lighter valve springs? Of which there is now a TSB for because the sucked. And a cylinder one misfire seems to me to be the most common issue. That or a random miss.
Reply
0
Old Sep 4, 2016 | 11:49 AM
Share
  #28  
XJwonders's Avatar
XJwonders
CF Veteran
Premium Member
 
Joined: Jan 2013
Posts: 19,219
Likes: 45
From: west chester, pa
Year: 1999
Engine: 4.0
Default
Originally Posted by Waynerd
Wasn't 96 the year they switched to lighter valve springs? Of which there is now a TSB for because the sucked. And a cylinder one misfire seems to me to be the most common issue. That or a random miss.
I think only 97 and 98 had that issue
Reply
0
Old Sep 4, 2016 | 12:23 PM
Share
  #29  
$200xjbuild's Avatar
$200xjbuild
Thread Starter
Junior Member
 
Joined: Apr 2015
Posts: 72
Likes: 0
Default
Originally Posted by Waynerd
Wasn't 96 the year they switched to lighter valve springs? Of which there is now a TSB for because the sucked. And a cylinder one misfire seems to me to be the most common issue. That or a random miss.
I guess ill be taking my head then.
Reply
0
Old Sep 4, 2016 | 12:57 PM
Share
  #30  
Jeepin'_Aint_EZ's Avatar
Jeepin'_Aint_EZ
CF Veteran
 
Joined: Jan 2012
Posts: 2,208
Likes: 5
From: Ocean County, NJ
Year: 1998
Model: Cherokee
Engine: 4.0L
Default
You did a leak down test and found that you're losing compression from the exhaust valve but pouring 3 tablespoons of oil into the cylinder had it perform normally? Something doesn't add up here.
Reply
0



Advanced Search

All times are GMT -5. The time now is 10:01 PM.