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Old 10-10-2013, 09:18 PM   #1
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Leaking antifreeze

I have a 1998 Wrangler Sport. I have noticed small leaks of antifreeze but can't pinpoint it. Does not always leak. May go days and no leak, then all of sudden it reappears. Does not run hot and radiator remains full. Water pump going bad? Need help.

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Old 10-10-2013, 09:52 PM   #2
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Make sure it's not coming from the overflow, you might just have the jug/coolant reservoir over-filled.

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Old 10-10-2013, 10:09 PM   #3
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Mine did this, ended up spewing from the water pump a week or two later. Just look things over real good. It's a small system
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Old 10-10-2013, 10:49 PM   #4
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Also look at the radiator itself. Ours was doing similar, kept finding a drop or two here and there. Finally caught it in the act. The top left solder joint on the radiator was cracked,and it would weep coolant. If the Jeep was running down the road it would get blown back onto various spots on the engine. Soon as the engine would shut off the little bit of coolant on the radiator would evaporate from the heat.

Cleaned up the area and soldered the spot, no more problem.
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Old 10-11-2013, 05:20 AM   #5
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Drive it around the block cold and come back and check it. This prevents the motor from getting hot enough to evaporate the coolant and you can see the leak.
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Old 10-11-2013, 07:27 AM   #6
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Where are you seeing the drip on the ground, more towards the radiator, front of the engine, rear, sides etc... There are a lot of places it could leak from. Coming from the back or sides then it could be your freeze plug has a small hole in it. From the front of the engine it could be the water pump, thermostat housing, hoses etc...
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Old 10-11-2013, 09:37 AM   #7
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There's a weep hole at the bottom of the pump. It will leak there until it goes boom.
Drive it, then get under it and look.
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Old 10-11-2013, 10:59 AM   #8
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Have it pressured tested and you should find where it is coming from. It is a simple test that most any shop will be able to do and shouldn't cost you but a few bucks.
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Old 10-11-2013, 12:20 PM   #9
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check your rad cap for any debris on the seal thats where mine was leaking
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Old 10-11-2013, 12:23 PM   #10
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Pump it up bu hand

I have had the thermostat housing gasket weep where you cant see it, the water pump can also weep down the back side. I have also had a tiny pinhole in my radiator that was hard to diagnose.

Many auto parts stores have a hand pump you can borrow and attach to your radiator (in place of the cap) Just pump it up and see if you can locate the leak.

Just don't put Bars leak fix in the radiator.....Bad stuff
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Old 10-11-2013, 02:43 PM   #11
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Check your hoses. Sometimes the water pump might leak and the coolant can follow the lower radiator hose down then it drips onto the ground.
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Old 10-11-2013, 03:03 PM   #12
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It could also be the radiator leaking at the seams. I have had 2 of them (plastic) do this in the past and they leak more when cold as they expand when they get hot. I have this same thing going on now with a Dodge truck using the same plastic radiator material. You need to find out where the fluid is coming from first of all.
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Old 10-11-2013, 05:35 PM   #13
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Maybe heater core-IF you have a/c it can get diluted with the condensation water from the a/c- and hard to detect. If no a/c-forget what I said.
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Old 10-11-2013, 05:53 PM   #14
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Quote:
Originally Posted by kawzak View Post
Maybe heater core-IF you have a/c it can get diluted with the condensation water from the a/c- and hard to detect. If no a/c-forget what I said.
most likely it would leak into the passenger floor board if it were heater core.
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Old 10-11-2013, 09:51 PM   #15
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Freeze plugs?
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Old 10-12-2013, 01:15 AM   #16
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Best bet is to have a compression test done. The mechanics around my area don't charge just for the test. I recently noticed a leak as well had the test done and found out it was just my water pump gasket.

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