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.
Old Sep 21, 2015, 03:49 PM
How-Tos on this Topic
Last edit by: IB Advertising
See related guides and technical advice from our community experts:

Browse all: General Overview
Print Wikipost

XJ Ask the Question Thread

Thread Tools
 
Search this Thread
 
Old Dec 21, 2013 | 11:14 AM
  #38281  
stitch702's Avatar
Senior Member
 
Joined: Apr 2013
Posts: 673
Likes: 1
From: Sin City
Year: 1998
Model: Cherokee
Default

Originally Posted by acewingman89
Did my compression test...I'm boned.

All cylinders except for number 3 register right around 150 psi. Number three....barely 30 psi.

I know this isn't good but besides it not being good. What does this mean? This is my first time doing a compression test so idk exactly what that tells me with it being soo low.

Stroker it
Old Dec 21, 2013 | 11:24 AM
  #38282  
acewingman89's Avatar
Seasoned Member
 
Joined: Feb 2013
Posts: 287
Likes: 0
Default

Originally Posted by bulrid8
Did you do test a few times to verify the reading?
Ya I did it a few times and the readings didn't change much if any
Old Dec 21, 2013 | 11:24 AM
  #38283  
acewingman89's Avatar
Seasoned Member
 
Joined: Feb 2013
Posts: 287
Likes: 0
Default

Originally Posted by stitch702
Stroker it
As in build it up into a stroker engine?
Old Dec 21, 2013 | 11:27 AM
  #38284  
stitch702's Avatar
Senior Member
 
Joined: Apr 2013
Posts: 673
Likes: 1
From: Sin City
Year: 1998
Model: Cherokee
Default

Originally Posted by acewingman89
As in build it up into a stroker engine?

Yup or purchase a complete long block or drop it in. Did u pour more oil in the cylinder and see if the compression went up? If o could be the rings. Either way gonn need to do a tear down.
Old Dec 21, 2013 | 11:27 AM
  #38285  
bulrid8's Avatar
Seasoned Member
 
Joined: May 2012
Posts: 436
Likes: 0
From: Ware Shoals, SC
Year: 1993
Model: Cherokee
Engine: 4.0L
Default

Only one cylinder, I would say rings or head gasket. That much compression lose, would more likely be a headgasket. Not to bad to replace.
Old Dec 21, 2013 | 11:32 AM
  #38286  
acewingman89's Avatar
Seasoned Member
 
Joined: Feb 2013
Posts: 287
Likes: 0
Default

Originally Posted by bulrid8
Only one cylinder, I would say rings or head gasket. That much compression lose, would more likely be a headgasket. Not to bad to replace.
I'm pretty sure my gasket is blown. I'm finding oil in my coolant.

I'm kinda wondering if I have a bad valve or valve spring. My spark plus was covered in oil too
Old Dec 21, 2013 | 11:32 AM
  #38287  
cruiser54's Avatar
::CF Moderator::
 
Joined: Aug 2011
Posts: 43,971
Likes: 1,578
From: Prescott, Az
Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by acewingman89
Did my compression test...I'm boned.

All cylinders except for number 3 register right around 150 psi. Number three....barely 30 psi.

I know this isn't good but besides it not being good. What does this mean? This is my first time doing a compression test so idk exactly what that tells me with it being soo low.
I assume that was a "dry" test. Now do a "wet" test.
Old Dec 21, 2013 | 11:33 AM
  #38288  
acewingman89's Avatar
Seasoned Member
 
Joined: Feb 2013
Posts: 287
Likes: 0
Default

Originally Posted by stitch702
Yup or purchase a complete long block or drop it in. Did u pour more oil in the cylinder and see if the compression went up? If o could be the rings. Either way gonn need to do a tear down.
Tell u what. U buy the kit for me and I'll do it lol
Old Dec 21, 2013 | 11:50 AM
  #38289  
Turbo X_J's Avatar
CF Veteran
15 Year Member
 
Joined: Sep 2009
Posts: 8,567
Likes: 20
From: ☼ Blackhole Sun
Year: My Jeep is a GMC
Default

Originally Posted by acewingman89
I'm pretty sure my gasket is blown. I'm finding oil in my coolant.
You sure it's not the other way around?
Old Dec 21, 2013 | 12:03 PM
  #38290  
acewingman89's Avatar
Seasoned Member
 
Joined: Feb 2013
Posts: 287
Likes: 0
Default

Originally Posted by Turbo X_J
You sure it's not the other way around?
Ya I'm sure. My oil isn't milky looking
Old Dec 21, 2013 | 12:03 PM
  #38291  
acewingman89's Avatar
Seasoned Member
 
Joined: Feb 2013
Posts: 287
Likes: 0
Default

Originally Posted by cruiser54
I assume that was a "dry" test. Now do a "wet" test.
Just did a wet test and my compression jumped to around 90 in cylinder number three...so I'm assuming it's piston rings?
Old Dec 21, 2013 | 12:06 PM
  #38292  
ThatPurpleXJ's Avatar
CF Veteran
 
Joined: Sep 2012
Posts: 1,289
Likes: 0
From: Springfield Virginia
Year: 1998
Model: Cherokee
Engine: 4.0
Default

So anyone that goes doorless knows about mud in the door jams. What if you sprayed rustoleums water repellent stuff, that any liquid just rolls off, in the door jams? I feel like it's a stupidly great idea
Old Dec 21, 2013 | 01:39 PM
  #38293  
NewKindOfClown's Avatar
Moderator of Jeeps
 
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
Default

Originally Posted by ThatPurpleXJ
So anyone that goes doorless knows about mud in the door jams. What if you sprayed rustoleums water repellent stuff, that any liquid just rolls off, in the door jams? I feel like it's a stupidly great idea
Mud isn't liquid. It'll stick, but it may be easier to wipe off.
Old Dec 21, 2013 | 03:56 PM
  #38294  
RSWiser's Avatar
Member
 
Joined: Dec 2011
Posts: 226
Likes: 2
From: Utah
Year: 1999
Model: Cherokee
Engine: 4.0
Default

Question about removing seats.

Today I removed my passenger seat no problem.

Then onto the driver side. The outside rear bolt snapped down in the hole. I know it goes all the way thought to be exposed on the underside. Question is, home much is the exposed underneath. I didn't crawl under today because I was parked in the snow.

Indeed to get the bolt out from the bottom. Hoping there is enough to grab.

RSWiser
1999 Cherokee Sport
Old Dec 21, 2013 | 04:47 PM
  #38295  
Turbo X_J's Avatar
CF Veteran
15 Year Member
 
Joined: Sep 2009
Posts: 8,567
Likes: 20
From: ☼ Blackhole Sun
Year: My Jeep is a GMC
Default

Originally Posted by RSWiser
I didn't crawl under today because I was parked in the snow.
It's snow man, not molten lava, have a look I promise it won't hurt you.
Maybe make some snow angels while you are down there too.



All times are GMT -5. The time now is 06:54 PM.