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Unread 01-28-2014, 02:39 PM   #1
Candymancan
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1998 ZJ 
 
Join Date: Aug 2010
Location: Virginia
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Jeep leaking coolant on ground..

So my 5.9 today I noticed a big puddle on the ground.. Bottle is near empty.. I never saw this yesterday so it happened last night when I was driving or when it was parked.. Temps are extremely cold.. but I know my coolant is up for it I checked it with a measuring tool awhile back.

I went under and prayed it wasn't the radiator and I found its leaking on the driver corner.. The drain plug apparently is leaking.. Its dripping slowely out of the little downspout. I know for a fact this plug is fairly new as I replaced it like 3 years ago.. Any idea's ? Could it really have gone bad this fast ?

Imo go to the store and get another and hopefully not a face full of coolant when I do lol.. I hope this fixes it.. This may be a dumb post I guess but Im wondering what would cause this to leak out of the spout with a fairly new plug that never leaked before

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Unread 01-28-2014, 06:55 PM   #2
StPaul59
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1998 ZJ 
 
Join Date: Mar 2013
Location: St Paul, MN
Posts: 333
Quote:
Originally Posted by Candymancan View Post
So my 5.9 today I noticed a big puddle on the ground.. Bottle is near empty.. I never saw this yesterday so it happened last night when I was driving or when it was parked.. Temps are extremely cold.. but I know my coolant is up for it I checked it with a measuring tool awhile back.

I went under and prayed it wasn't the radiator and I found its leaking on the driver corner.. The drain plug apparently is leaking.. Its dripping slowely out of the little downspout. I know for a fact this plug is fairly new as I replaced it like 3 years ago.. Any idea's ? Could it really have gone bad this fast ?

Imo go to the store and get another and hopefully not a face full of coolant when I do lol.. I hope this fixes it.. This may be a dumb post I guess but Im wondering what would cause this to leak out of the spout with a fairly new plug that never leaked before
The same thing is happening to me right now. WTF My radiator is fairly new(Oreillys) less than a year old. We just had a -15 snap of cold weather. Im hoping this reseals itself with the warmer weather. I just did the waterpump and now this! G** damn son of a %$#&@
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Unread 01-28-2014, 08:34 PM   #3
OCDComputing
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1998 ZJ 
 
Join Date: Jul 2013
Location: Orangeville, Ontario
Posts: 81
Dang...you guys must have some sissy Jeeps in the U.S.! LOL!! We've had a bunch of days close to -40f or better (yes I did the translation from c to f). So far *knock on wood* my....hmm...as yet un-named 98 has been rock solid. Like I said...*knock on wood*! LOL!! It has started every time...even after sitting for quite a few days and hasn't decided to grace me with any fluids on the ground...for which I'm thankful! Stay safe and warm!!...but I will say...when the temps here have been -40..the heat in the Jeep sucks large!
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Unread 01-28-2014, 09:08 PM   #4
JasonStebbins
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1997 ZJ 
 
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Replaced my radiator about six months ago. After a week of wondering why I was still leaking coolant, I found it was coming from the drain plug. Tightened it up with some channel locks and it solved the problem.

Otherwise I would just permanently plug it with some kind of grommet and some RTV. Over time they get brittle, I always use the lower radiator hose when draining coolant because I don't trust the plugs.
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Unread 01-28-2014, 09:25 PM   #5
StPaul59
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Quote:
Originally Posted by JasonStebbins View Post
Replaced my radiator about six months ago. After a week of wondering why I was still leaking coolant, I found it was coming from the drain plug. Tightened it up with some channel locks and it solved the problem.

Otherwise I would just permanently plug it with some kind of grommet and some RTV. Over time they get brittle, I always use the lower radiator hose when draining coolant because I don't trust the plugs.
Never touched mine either.. I should have RTV'd the crap out of it when I had the system drained the other week... I cant really use a channel locks on mine since its platsic.
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Unread 01-28-2014, 09:52 PM   #6
JasonStebbins
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Quote:
Originally Posted by StPaul59 View Post
Never touched mine either.. I should have RTV'd the crap out of it when I had the system drained the other week... I cant really use a channel locks on mine since its platsic.
Mine is plastic too. I didn't have any pliers handy so I used the locks. I tried tightening by hand but it didn't budge, got a solid half turn with the locks and it hasn't leaked since. I would have used a plug and/or RTV if I had known at the time but I wasn't expecting it to leak with a new radiator. Next time I flush the coolant I will definitely be putting up a permanent barrier.
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Unread 01-28-2014, 11:24 PM   #7
Uniblurb
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Location: Central, Ohio
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Quote:
Originally Posted by Candymancan View Post
So my 5.9 today I noticed a big puddle on the ground.. Bottle is near empty.. I never saw this yesterday so it happened last night when I was driving or when it was parked.. Temps are extremely cold.. but I know my coolant is up for it I checked it with a measuring tool awhile back.

I went under and prayed it wasn't the radiator and I found its leaking on the driver corner.. The drain plug apparently is leaking.. Its dripping slowely out of the little downspout. I know for a fact this plug is fairly new as I replaced it like 3 years ago.. Any idea's ? Could it really have gone bad this fast ?

Imo go to the store and get another and hopefully not a face full of coolant when I do lol.. I hope this fixes it.. This may be a dumb post I guess but Im wondering what would cause this to leak out of the spout with a fairly new plug that never leaked before
Usually it's the small o-ring on those drain plugs with spouts which gets chewed up or just plain fails. Probably with the super low temps and then heating up hot, then cooling down real quick, caused the coolant to bleed past it? Kind of a poor design where you have to push it in fairly hard to get those 2 plastic tabs past the inner hole then the o-ring hits the sharp surface edges where it seals.

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Unread 01-29-2014, 09:37 AM   #8
KJK
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O-ring failure in below freezing temps. Sound familiar?
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