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 Post subject: Coolant leak
PostPosted: Wed Jul 08, 2015 11:25 pm 
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Location: Midwest
The LoCool message came on today (immediately causing head gasket nightmare thoughts) after parking it on the driveway for awhile I could see two puddles forming, one from AC condensation, and another mystery puddle centered under the turbo downpipe area. Further investigation showed that that there were moist areas all the way to the front of the engine bay around the passenger side radiator support and shroud areas.

Any ideas of where to look now?

I've replaced the thermostat and upper radiator hose in the past, but not the lower hose (which looks like a PITA to change!) and I've not touched the radiator.

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#2 2006 Metallic Green Limited; currently DOA
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 Post subject: Re: Coolant leak
PostPosted: Thu Jul 09, 2015 12:06 am 
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Location: Lebanon, KY, USA
Give it a "pressure test" and the problem should be easy to find. Search for Radiator Pressure Tester Kit.

You might be able to rent one locally.

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 Post subject: Re: Coolant leak
PostPosted: Thu Jul 09, 2015 9:18 am 
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Location: Central Indiana
The lower Radiator hose is a PITA if you aren't already apart for a Timing Belt or something similar.

That being said, the location that your leak is coming from sounds more like the hose coming out of the bottom of the reservoir or possibly the reservoir itself.

I would start there.

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 Post subject: Re: Coolant leak
PostPosted: Thu Jul 09, 2015 1:25 pm 
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Joined: Wed Sep 12, 2012 11:30 pm
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Location: Midwest
I haven't had a chance to investigate further, but I know the lower coolant hoses took some abuse when I was changing the pax side UCA. :x

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#1 2006 Silver CRD Limited, flipped spare tire, ASFIR skids, GDE TCM & Ecotune, blue SAMCOs, 5V glow plugs, Rotella T6, intank fuel pump, Gen2 fuel head, new crank sensor, JBA 2.5 in silver package, Provent and ARB bumper
#2 2006 Metallic Green Limited; currently DOA
#3 2005 Silver project; currently not running...don't judge me


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 Post subject: Re: Coolant leak
PostPosted: Thu Jul 09, 2015 1:42 pm 
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Location: Tallahassee, Florida
If you can see puddles forming then you probably have a fairly rapid leak such that you might be able to see it if you fill up the coolant tank, put cap back on, crank up in the shade, and go looking with a flashlight. Wet up by radiator unfortunately sounds like a radiator leak but dripping around the turbo down pipe could easily be a heater hose, bypass or water pump hose, or the oil cooler as they are all in that area. Remember on a running/driving engine coolant from a leak blows all over the place.

Pressure test will tell you that you have a leak but may not help in locating the leak. If you do a pressure test I'd add some UV dye and get a UV light to help locate the leak.

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