Coolant Leak at Rear of 2.5 Engine - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today



Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 04-18-2010, 11:12 AM   #1
Jeeper
 
Join Date: Jan 2010
Posts: 191
KCrisp is on a distinguished road
Coolant Leak at Rear of 2.5 Engine

I have a 1999 TJ with the 4 cylinder engine. Mileage is 113,000. When parked it is now leaving a small green puddle right below the joint of the engine and the (manual) transmission. It comes out of what looks like the inspection window for the clutch. All hoses are fine, heater core is fine, no oil in the coolant or coolant in the engine oil, engine runs great, just this problem.

Looking on the outside of the engine as far back as I can see I find no source for this. Is there a freeze plug on the back of the engine that I can't see? Back of the head gasket leaking where I can't see it? I put some Barrs in it this morning... I'd love any answer that doesn't use the phrase "cracked block."

Thanks!
KCrisp is offline   Quote
Old 04-18-2010, 11:44 AM   #2
Jeeper
 
chrisb0108's Avatar
 
Join Date: Mar 2010
Location: FL
Posts: 297
chrisb0108 is on a distinguished road
There is a antifreeze drain plug on the passanger side of the engine block I believe that you may want to check. I'm not mechanically savvy as many others on here so if its something more serious and "high-tech", then someone else will have to chime in. Just figured I give it a shot for you to have something to check while waiting on other responses. Good luck and hopefully its not a....well, what you said!

__________________
'98 TJ 2.5L
chrisb0108 is offline   Quote
Old 04-18-2010, 11:48 AM   #3
Jeeper
 
flash19901's Avatar
 
Join Date: Apr 2010
Location: Milton, Delaware
Posts: 78
flash19901 is on a distinguished road
Get an inspection mirror. Look all along the back of the block as possible 1. right when you shut it off, 2. after 15 minutes and 3. when it has cooled down to ambient temperature. This should reveal you problem to see from where and when it is leaking. If it's not external then you can go from there. Probably something simple, though. Have you EVER run it hot?
__________________
Thank you.
ChrisW

Wubba, wubba, wubba. Bing, bang, bong. Yuck, yuck, yuck and a fiddle-dee-dee. - The Yeti

Husband and father of two, ASE Certified auto parts salesman and 4x5 film photographer extraordinaire.
flash19901 is offline   Quote
 
Old 04-18-2010, 12:45 PM   #4
Jeeper
 
Join Date: Jan 2010
Posts: 191
KCrisp is on a distinguished road
I've never run it hot but then I've only put the last 2000 miles on it. The water pump (original) was working fine when I got it and the radiator too. It was bone dry when I was looking at it.
KCrisp is offline   Quote
Old 04-18-2010, 12:48 PM   #5
Jeeper
 
flash19901's Avatar
 
Join Date: Apr 2010
Location: Milton, Delaware
Posts: 78
flash19901 is on a distinguished road
So, you just got this Jeep? Sounds like someone's can of black pepper just gave way. Hope it's not bad.
__________________
Thank you.
ChrisW

Wubba, wubba, wubba. Bing, bang, bong. Yuck, yuck, yuck and a fiddle-dee-dee. - The Yeti

Husband and father of two, ASE Certified auto parts salesman and 4x5 film photographer extraordinaire.
flash19901 is offline   Quote
Old 04-19-2010, 10:16 AM   #6
Jeeper
 
Join Date: Jan 2010
Posts: 191
KCrisp is on a distinguished road
The Barrs appears to have stopped the leak completely, not a drop. Hopefully it will hold until the next clutch replacement.
KCrisp is offline   Quote
Old 04-19-2010, 01:59 PM   #7
Jeeper
 
chrisb0108's Avatar
 
Join Date: Mar 2010
Location: FL
Posts: 297
chrisb0108 is on a distinguished road
Quote:
Originally Posted by KCrisp View Post
The Barrs appears to have stopped the leak completely, not a drop. Hopefully it will hold until the next clutch replacement.
The Barrs?...just curious what fixed your problem and I'm not sure what The Barrs is. Thanks!
__________________
'98 TJ 2.5L
chrisb0108 is offline   Quote
Old 04-19-2010, 02:18 PM   #8
Jeeper
 
Join Date: Jan 2010
Posts: 191
KCrisp is on a distinguished road
Barrs is a stop leak. You shake it up and pour it in and drive for half an hour.

I've used it on many MGBs since their head gaskets usually seep a little after you replace them. Seems to work better for me than the powdered aluminum stuff.
KCrisp is offline   Quote
Old 04-19-2010, 02:41 PM   #9
Jeeper
 
Thuone's Avatar
 
Join Date: Apr 2010
Location: Ocala, FL
Posts: 160
Thuone is on a distinguished road
There is a plug on the side of the engine 6cyl its located on the drivers side I think the 4.2 is on the passanger side firewall end as said above. You pry wont see it unless you are under the jeep. Pick up a haynes manual from advanced it will show you the location.. You may need to remove it and put some pipe tape on it. I can put a pic up tonight from the book.
__________________
Just
Empty
Every
Pocket
Thuone is offline   Quote
Old 09-14-2010, 10:08 AM   #10
Jeeper
 
Join Date: Jan 2010
Posts: 191
KCrisp is on a distinguished road
The leak came back, but it only happens when it sits for more than a week. Dribbles out of the bell housing a couple ounces worth. I put a pressure tester on it and left it at 16 lbs and nothing came out when it was reasonably warm. It did find the freeze plug on the back of the head, it is dry. I've decided I am not going to worry about it.

KCrisp is offline   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
D35 strength?? GrnTJ TJ Tech Forum 37 07-31-2013 01:47 PM
water leak from behind engine block jconway TJ General Discussion Forum 11 05-20-2010 09:33 AM
Coolant leak Kjones YJ Tech Forum 1 04-15-2010 10:54 AM
Water leak behind engine block jconway TJ Tech Forum 1 04-14-2010 11:16 PM
Leak from engine Triple88a TJ Tech Forum 12 12-14-2006 06:46 PM



Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 04:38 PM.


User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC
« Back

Enter your email address:

Delivered by FeedBurner