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Old 11-15-2010, 09:46 AM   #1
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Coolant Leak but can't find it

I have been loosing coolant for a few weeks now but I can not find a leak.
There are no puddles or drips anywhere.
I do smell coolant when I stop driving.

What would consume coolant and not show anywhere?
I have replaced the radiator because it blew about 3 months ago. I then replaced the upper and lower hose to be sure they were not cracked.

I have to add coolant daily, it seems to have gotten worse over time.

Help.
Mike

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Old 11-15-2010, 09:57 AM   #2
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Sounds like a head gasket as the coolant is going somewhere and the coolant smell may be burnt coolant in the exhaust. Pull your plugs and inspect them. If they are wet or smell like coolant / antifreeze then the head gasket is the culprit. Sounds like you are catching this before it becomes a bigger problem.

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Old 11-15-2010, 12:29 PM   #3
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Originally Posted by techmike View Post
Sounds like a head gasket as the coolant is going somewhere and the coolant smell may be burnt coolant in the exhaust. Pull your plugs and inspect them. If they are wet or smell like coolant / antifreeze then the head gasket is the culprit. Sounds like you are catching this before it becomes a bigger problem.
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Old 11-15-2010, 07:25 PM   #4
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x-3, also check your heater core.
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Old 11-15-2010, 10:02 PM   #5
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x-3, also check your heater core.
The heater core should leave a puddle on the floor board if it's leaking.
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Old 11-15-2010, 10:13 PM   #6
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If the head gaskets blown you could be losing coolant into the cylinder. If it is leaking into the oil it will make it look like cold cream. Check the oil and if its looks okay pull the plugs and see if one or more look like different.
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Old 11-15-2010, 10:22 PM   #7
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Another idea if it's not the above is a small freeze plug leak. I had been slowly loosing coolant for a while on my Jeep at one time. When I pulled the tranny, clutch and flywheel to do a clutch, I noticed the rear freeze plug was leaking. The coolant then evaporated off the block before it could drip. Unfortunatly, without pulling the flywheel off, this just looked like a rear main seal starting to leak. But there are other freeze plugs you could check.
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Old 11-16-2010, 04:59 AM   #8
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^^ true... I just changed one.

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