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  #1  
Old February 7th, 2015, 01:11 AM
RBBailey
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RBBailey
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Coolant Leak

Went out to start the 110 (3.5l) today, and noticed a small pool of coolant on the ground under the drivers side behind the bumper.

Didn't get a chance to do anything with it yet, except to wash away the coolant so as to keep the cats from licking it.

This will be the first time I'm looking into a problem under the bonnet on a Defender. Other than the standard cracked hoses and welds, is there anything I should know about and look for?

...time.... need... more.... time......
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  #2  
Old February 7th, 2015, 10:22 AM
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Jason Rose
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Check all your hose clamps first. Several times I've seen coolant I've found it to be a hose clamp .
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  #3  
Old February 7th, 2015, 02:09 PM
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Chris Davis
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And don't just check above the pool-- it can travel away from the leak. Lots of possibilities including blowing out overflow hose on reservoir, weep hole on water pump, and cracked radiator. Hope it is a hose, as that is easiest...
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  #4  
Old February 7th, 2015, 02:24 PM
RBBailey
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yeah... now I don't see anything leaking except a bit from the bleed screw. But the pool of coolant I saw was right under the LH radiator. Now I have the truck in the garage, and it isn't leaking anyplace.

NOTE: The puddle formed there after I had the vehicle parked for five days. I've never noticed any leaks before this, warm, cold or otherwise.
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  #5  
Old February 13th, 2015, 07:09 PM
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Mat Morgan
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Pressure test the cooling system, tester can be purchased at Napa/ auto parts store. Just don't take pressure over the rating on the pressure cap. Usually 15psi. Once pressurized let sit for a few hours and look for leak.
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  #6  
Old February 13th, 2015, 07:17 PM
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mark kellgren
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Clamps would be first suspect. When winter hits and temps drop i usually get a few drips here and there around clamps and hoses that were put on fresh in warmer weather. Cold makes the rubber shrink a bit thereby creating some slack under the clamp. Get it tight in winter and it should stay that way until you loosen it again down the road for something.

Its the coolant loss that you cant find puddles or leakage for that keep me up at night. When i see a dribble of coolant I thank God for that blessing.
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  #7  
Old February 13th, 2015, 07:26 PM
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Jason Lavender
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I just went through this. As others stated above, once the cold hit I started to get a couple of small puddles. The hose clamps had backed off or the hoses contracted. Found the offending hose, tightened the hell out of the clamp, and I've been puddle free for a month.
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