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.

96 Cher, bad valve knock

Thread Tools
 
Search this Thread
 
Old 10-09-2009, 08:55 AM
  #1  
Newbie
Thread Starter
 
highpockets212's Avatar
 
Join Date: Oct 2009
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0L, 235,000m
Default 96 Cher, bad valve knock

I searched but couldn't find an answer to my question so here goes.

I have a 96 Cher, 4.0L that has a valve knocking bad. It started after an oil change. So I took the cover off last night and found the valve (it's 4th from the back). I can put a hammer handle down on it and make it stop rattling. I replaced the rocker and push rod to no avail. It's the valve itself. I can slip a washer under when the rocker contacts the top of the valve stem and that makes the noise stop but also makes the engine run like crap.

Any ideas short of getting a valve job which I cannot afford right now?

Thanks and God Bless
Old 10-09-2009, 10:58 AM
  #2  
Senior Member
 
Throttle Jockey's Avatar
 
Join Date: Feb 2009
Posts: 811
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

there's a chance of a collapsed lifter. take a look at the other valves and make sure they are all the same heigth. if it runs ok with out the washer under the rocker but "knocks" may just be a lifter.
Old 10-09-2009, 12:31 PM
  #3  
Newbie
Thread Starter
 
highpockets212's Avatar
 
Join Date: Oct 2009
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0L, 235,000m
Default

Thanks bro!!

If it's a collapsed lifter is that something that can be fixed without removing the head? I'm an engineer with tools; not a mechanic.

If it runs fine but knocks will it hurt it to drive it to the shop etc.?

Thanks again
God Bless
Old 10-09-2009, 04:56 PM
  #4  
Senior Member
 
Throttle Jockey's Avatar
 
Join Date: Feb 2009
Posts: 811
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

if it is in fact a collapsed lifter, they are pretty easy to replace providing the oil has been changed regularly. if not there will be sludge built up on it and it will be harder to get it out. you'll have to use a long pair of needle nose pliers or there is a tool to remove the lifters.
Old 10-13-2009, 09:22 AM
  #5  
Newbie
Thread Starter
 
highpockets212's Avatar
 
Join Date: Oct 2009
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
Year: 1996
Model: Cherokee
Engine: 4.0L, 235,000m
Default

Question: You have to remove the head right?
Old 10-13-2009, 09:28 AM
  #6  
"CF Moderator"
 
TrekkerJmm's Avatar
 
Join Date: Sep 2008
Location: N.J. Shore Area
Posts: 3,045
Likes: 0
Received 2 Likes on 2 Posts
Year: 1994
Model: Cherokee
Engine: l6 HO
Default

Originally Posted by highpockets212
Question: You have to remove the head right?
Yep you have to remove the head...Tj
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
t.mcginley.jr
Jeep Builds
105
01-31-2024 04:58 PM
jeefersjeepers
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
3
09-20-2023 12:51 PM
jhamXJ
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
11
11-09-2021 08:20 AM
bradleyheathhays
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
6
10-03-2015 09:51 PM
Ella15
Cherokee Chat
0
09-04-2015 05:18 PM

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


Quick Reply: 96 Cher, bad valve knock



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