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.

Drove without coolant and now no compression... Posible just HG?

Thread Tools
 
Search this Thread
 
Old 02-01-2012, 06:48 PM
  #1  
Senior Member
Thread Starter
 
darknezz's Avatar
 
Join Date: Mar 2010
Location: Eugene, OR
Posts: 812
Likes: 0
Received 1 Like on 1 Post
Year: 1989
Model: Cherokee
Engine: 4.7 Stroker I6
Default Drove without coolant and now no compression... Posible just HG?

My friend drove her zj 20 miles with a blown coolant hose, the engine was knocking bad then wouldn't start after stopped. I put some oil down each cylinder to try and help the rings. You can hear theres no back pressure but I did a compression test anyway and it only pops up to 30...

So my only question really, is it possible its the head gasket? Or the piston rings are fried and its time for another engine.

thanks
Old 02-01-2012, 06:57 PM
  #2  
CF Veteran
 
Firestorm500's Avatar
 
Join Date: Apr 2009
Posts: 4,734
Likes: 0
Received 9 Likes on 9 Posts
Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
Default

Blown engine.
Old 02-01-2012, 06:58 PM
  #3  
CF Veteran
 
tjwalker's Avatar
 
Join Date: Nov 2010
Location: In the middle of Minnesota!
Posts: 5,806
Received 99 Likes on 88 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
Default

Please list the compression on ALL SIX cylinders. Tough to tell by your description.
Old 02-01-2012, 07:16 PM
  #4  
Senior Member
Thread Starter
 
darknezz's Avatar
 
Join Date: Mar 2010
Location: Eugene, OR
Posts: 812
Likes: 0
Received 1 Like on 1 Post
Year: 1989
Model: Cherokee
Engine: 4.7 Stroker I6
Default

front to back 20 30 30 50 50 60

i think its done
Old 02-01-2012, 07:51 PM
  #5  
CF Veteran
 
RTorrez1's Avatar
 
Join Date: Sep 2011
Location: Riviera, Texas
Posts: 4,172
Likes: 0
Received 4 Likes on 4 Posts
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
Default

I hate to say it but i think your friend had what he had coming to him thinking he could drive with out adding any coolant. Why would anyone in there right mind try to drive any vehicle without any coolant. I hate to say it but I think it is time to buy a new engine!!!
Old 02-01-2012, 07:52 PM
  #6  
Member
 
Thunder & Lightning's Avatar
 
Join Date: Sep 2011
Location: Sicklerville NJ
Posts: 128
Likes: 0
Received 1 Like on 1 Post
Year: 98 2 Door SE
Model: Cherokee
Engine: 4.0 High Output
Default

Originally Posted by darknezz
front to back 20 30 30 50 50 60

i think its done
I think you right.
Old 02-01-2012, 08:39 PM
  #7  
CF Veteran
 
DFlintstone's Avatar
 
Join Date: Aug 2011
Location: Nor-Cal Coast
Posts: 10,489
Likes: 0
Received 17 Likes on 17 Posts
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Default

I'm a hopeless optimist, maybe to a fault. If I followed with a wet compression test, and the numbers didn't come up too much, I might reason that a bunch of exhaust valves gave it up. I doubt you will hurt it much by pulling the head, checking the bores for scoring.

Knocking Eh? Pistons can, and do fall apart.

I had a girlfriend melt a Vega engine with 161,000 miles on it over a blown heater hose. (car had 206K)(their 3rd, sleeved design with added cooling passages was a great engine! Too late though.)
Old 02-01-2012, 10:35 PM
  #8  
CF Veteran
 
Bustedback's Avatar
 
Join Date: Feb 2010
Location: Oroville, CA
Posts: 12,367
Likes: 0
Received 19 Likes on 18 Posts
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
Default

Originally Posted by RTorrez1
I hate to say it but i think your friend had what he had coming to him thinking he could drive with out adding any coolant. Why would anyone in there right mind try to drive any vehicle without any coolant. I hate to say it but I think it is time to buy a new engine!!!
The key word is HER.
Old 02-01-2012, 11:25 PM
  #9  
Member
 
Diesel Dan's Avatar
 
Join Date: Dec 2011
Posts: 203
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

It's
Old 02-01-2012, 11:34 PM
  #10  
CF Veteran
 
Firestorm500's Avatar
 
Join Date: Apr 2009
Posts: 4,734
Likes: 0
Received 9 Likes on 9 Posts
Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
Default

Originally Posted by Diesel Dan
It's
I wish there was a "Like" button on here.
Old 02-01-2012, 11:40 PM
  #11  
CF Veteran
 
89Laredo's Avatar
 
Join Date: May 2009
Posts: 10,280
Likes: 0
Received 4 Likes on 4 Posts
Year: 1996
Engine: 4.0
Default

Originally Posted by Bustedback
The key word is HER.
x3
Old 02-02-2012, 01:39 AM
  #12  
Seasoned Member
 
krazynezz's Avatar
 
Join Date: Oct 2011
Location: spokane valley, wa
Posts: 433
Likes: 0
Received 2 Likes on 2 Posts
Year: 1993
Model: Cherokee
Engine: 4.0
Default

I got lucky, my old lady drove my xj when it still had death wobble. Long story short, she doesn't ever want to drive it.. .
Old 02-02-2012, 06:36 PM
  #13  
Senior Member
Thread Starter
 
darknezz's Avatar
 
Join Date: Mar 2010
Location: Eugene, OR
Posts: 812
Likes: 0
Received 1 Like on 1 Post
Year: 1989
Model: Cherokee
Engine: 4.7 Stroker I6
Default

Originally Posted by Diesel Dan
It's

thats great, laughed



Originally Posted by Bustedback
The key word is HER.
yea thats what I was gonna say, not quite sure what she was thinking, $500 lesson though now she knows and is just lucky I can put an engine in and not even charge.

driving a lifted jeep being cool and looks make up for her mistakes I guess lol
Old 02-02-2012, 06:40 PM
  #14  
CF Veteran
 
Gee oh Dee's Avatar
 
Join Date: Sep 2010
Location: Milwaukee, WI
Posts: 21,168
Likes: 0
Received 5 Likes on 5 Posts
Year: 1987
Engine: Check
Default

Originally Posted by darknezz
driving a lifted jeep being cool and looks make up for her mistakes I guess lol

I hope you get more than a look, brother.

Esp if your doing a motor swap for her.
Old 02-02-2012, 10:29 PM
  #15  
CF Veteran
 
Bustedback's Avatar
 
Join Date: Feb 2010
Location: Oroville, CA
Posts: 12,367
Likes: 0
Received 19 Likes on 18 Posts
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
Default

I think you're headed to the friendzone buddy, sorry to break the news to you.


Quick Reply: Drove without coolant and now no compression... Posible just HG?



All times are GMT -5. The time now is 11:27 AM.