leaking coolant from top of manifold? - JeepForum.com
 
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post #1 of 12 Old 03-07-2013, 09:20 PM Thread Starter
Sparkfly88
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leaking coolant from top of manifold?

I seem to have this bubbling of coolant on the top of my exhaust manifold...

It vanishes when my jeep is running though. Then bubbles out for a while when it's off.


I haven't really done much investigation because I just found this problem.

Forgive my lack of engine terms... Not familiar with head gasket location. Lol.

https://www.youtube.com/watch?v=se8A...e_gdata_player


Quote:
Originally Posted by NonRubicon View Post
You can find the struts by the remote reservoirs for the blinker fluid. You'll have to remove your Flux Capacitors to get to them though.

;)
Quote:
Originally Posted by Krochus View Post
The 2.5 is a boat anchor. 2.5l and 100hp is not enough for a rig that ways 3500lbs + rolling on soft tires with the aerodynamics of a waffle house restaurant
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post #2 of 12 Old 03-08-2013, 10:27 AM
timatoe
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You're correct on that lower portion being where the head gasket is. If it's leaking on the passenger side where it looks wet, then you likely need to replace the gasket. I don't think the coolant is going to travel up the manifold from the gasket on the driver side. I'm not sure about the 2.5 but on the 4.2 there is at least one manifold bolt that goes into a water jacket and will leak if it's not sealed. I used a small tube of permatex thread sealant on mine (not thread locker) like THIS.

Might try that first just to make sure it's not an easy fix before tearing everything apart.

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post #3 of 12 Old 03-08-2013, 11:57 AM
Que89YJ
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Gravity has a few rules. Things being down and traveling up.....nope.

It looks like a leak but a few qestions first. Do you have a overheating issue or the milky white in the oil that indicates coolant mixing with the oil? Are you refilling the coolant bottle frequently? Do you have any white exhaust or a sweet smell from the tail pipe?

There is a way to check for coolant leaks. Go down to the local parts store and rent a coolant pressure tester. You pressurize the system to 15 psi and watch to see if the pressure bleeds off rapidly and with 15 psi on the system if there is a leak on that side you should see it without starting the engine. With the pressure tester still hooked up to the radiator start the jeep and look at the guage. If there is a blown head gasket into the coolant you will see the pressure needle bouncing rapidly. There are good video's on youtube for the pressure test.
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post #4 of 12 Old 06-19-2013, 03:07 PM Thread Starter
Sparkfly88
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Well, it's been a while....
But my leak has gotten way worse.

Yes, the coolant bottle has to be refilled, and has since I bought it years ago.
I have replaced the exhaust manifold gasket WAYYYYYYYYYYYYY too many times.
I thought it was due to me bolts loosening up, and blowing out the center, but now I see the true problem.....I have coolant leaking from the center of the manifold, now spanning half the length.. right in the center, causing it to rust out and blow out.

I looked up in my manual the procedure, and there really isnt anything to it.

So I'm gonna finish repairing my motorcycle, then tear down the jeep

Quote:
Originally Posted by NonRubicon View Post
You can find the struts by the remote reservoirs for the blinker fluid. You'll have to remove your Flux Capacitors to get to them though.

;)
Quote:
Originally Posted by Krochus View Post
The 2.5 is a boat anchor. 2.5l and 100hp is not enough for a rig that ways 3500lbs + rolling on soft tires with the aerodynamics of a waffle house restaurant
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post #5 of 12 Old 08-21-2013, 05:52 PM Thread Starter
Sparkfly88
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Thread update!!!!
I've been riding my motorcycle around as my DD, but I decided to get my ol jeep back up to snuff.

I finally took the head off today, and found that the little "freeze plug" "oil plug" deals on my head, are rotted out.

I touched it with my finger, and it pushed right through..

Found headbolts by searching the forum...
http://headbolts.com/jeep-4-cylinder.htm

Found the expansion plugs at NAPA for .50 cents a pop.
gonna do all 4 of em since 3 are rotted.

http://www.napaonline.com/Catalog/Ca...029_0204501570

Quote:
Originally Posted by NonRubicon View Post
You can find the struts by the remote reservoirs for the blinker fluid. You'll have to remove your Flux Capacitors to get to them though.

;)
Quote:
Originally Posted by Krochus View Post
The 2.5 is a boat anchor. 2.5l and 100hp is not enough for a rig that ways 3500lbs + rolling on soft tires with the aerodynamics of a waffle house restaurant
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post #6 of 12 Old 08-21-2013, 09:18 PM
90YJinPC
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as long as you have the head off, I would take it to a head or machine shop to be checked out. if the freeze plugs are rotted out there may be other problems also. they will clean, magnaflux and go completely thru the valve train. there will be no doubt what you have when you put it back together. good luck
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post #7 of 12 Old 08-22-2013, 09:58 AM Thread Starter
Sparkfly88
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Yup, I was planning on doing everything with it off.

Just called up my NAPA autoparts machine shop.

175 for complete valve job, magnaflux, machining. etc

Quote:
Originally Posted by NonRubicon View Post
You can find the struts by the remote reservoirs for the blinker fluid. You'll have to remove your Flux Capacitors to get to them though.

;)
Quote:
Originally Posted by Krochus View Post
The 2.5 is a boat anchor. 2.5l and 100hp is not enough for a rig that ways 3500lbs + rolling on soft tires with the aerodynamics of a waffle house restaurant
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post #8 of 12 Old 08-24-2013, 02:22 PM Thread Starter
Sparkfly88
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Just got a shipment notification from headbolts.com.

Hurray!

Just hope they are right.

Quote:
Originally Posted by NonRubicon View Post
You can find the struts by the remote reservoirs for the blinker fluid. You'll have to remove your Flux Capacitors to get to them though.

;)
Quote:
Originally Posted by Krochus View Post
The 2.5 is a boat anchor. 2.5l and 100hp is not enough for a rig that ways 3500lbs + rolling on soft tires with the aerodynamics of a waffle house restaurant
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post #9 of 12 Old 08-26-2013, 11:22 AM Thread Starter
Sparkfly88
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Head is done. No problems.

Just waiting on shipment from headbolts.com to get here.

Quote:
Originally Posted by NonRubicon View Post
You can find the struts by the remote reservoirs for the blinker fluid. You'll have to remove your Flux Capacitors to get to them though.

;)
Quote:
Originally Posted by Krochus View Post
The 2.5 is a boat anchor. 2.5l and 100hp is not enough for a rig that ways 3500lbs + rolling on soft tires with the aerodynamics of a waffle house restaurant
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post #10 of 12 Old 08-26-2013, 03:24 PM Thread Starter
Sparkfly88
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Head bolts came today. If anyone is scared of ordering from the site, I wouldn't worry about it.

They are brand new made bolts, identical to the ones that came outta my engine.

Got plugs, plug wires, and the head. On the way home to reassemble!

Quote:
Originally Posted by NonRubicon View Post
You can find the struts by the remote reservoirs for the blinker fluid. You'll have to remove your Flux Capacitors to get to them though.

;)
Quote:
Originally Posted by Krochus View Post
The 2.5 is a boat anchor. 2.5l and 100hp is not enough for a rig that ways 3500lbs + rolling on soft tires with the aerodynamics of a waffle house restaurant
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post #11 of 12 Old 08-27-2013, 07:01 PM Thread Starter
Sparkfly88
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First start was a minor success..... It runs, but it has a higher Rev, and a large miss somewhere.

Gonna track down the vacuum leak ... And see what else is going on...

Quote:
Originally Posted by NonRubicon View Post
You can find the struts by the remote reservoirs for the blinker fluid. You'll have to remove your Flux Capacitors to get to them though.

;)
Quote:
Originally Posted by Krochus View Post
The 2.5 is a boat anchor. 2.5l and 100hp is not enough for a rig that ways 3500lbs + rolling on soft tires with the aerodynamics of a waffle house restaurant
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post #12 of 12 Old 08-28-2013, 04:35 PM Thread Starter
Sparkfly88
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Alright. Awesome. Jeep runs so smooth now.

I forgot to tighten two of the intake/exhaust bolts in the back. So I had a large leak in the rear two cylinders.

Gave it a good hosedown, and now I'm gonna weld some replacement floor pans.

Quote:
Originally Posted by NonRubicon View Post
You can find the struts by the remote reservoirs for the blinker fluid. You'll have to remove your Flux Capacitors to get to them though.

;)
Quote:
Originally Posted by Krochus View Post
The 2.5 is a boat anchor. 2.5l and 100hp is not enough for a rig that ways 3500lbs + rolling on soft tires with the aerodynamics of a waffle house restaurant
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