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Old 01-25-2011, 06:49 AM   #1
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Sprung a coolant leak



Just found a big puddle under my van...
I wondered if any of you GM (or others in the know) drivers could advise.
My Van has 80'000 Kms and is 12 years old...
Do you think it might be the dreaded intake manifold or a head-gasket?
I ask this due to all the web horror stories I have seen... Dex Cool etc..

I am actually having great difficulty in locating the leak in the maize of pipes...
It seems it might be dripping somewhere around the passenger side exhaust manifold and seems to exit under the van over the cross-member...

If it is a big job I will be attempting taking it on myself but wonder if I will be needing some special tools, I have read a Scan Tool (more than the scan gauge) to read Cam advance to reset the timing or maybe scan gauge does display this info???

Ok I am yattering on a bit but you all know what it feels like when your prides motor starts to play-up

Thanks for any advice you might have
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Old 01-25-2011, 09:08 AM   #2
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Re: Sprung a coolant leak

Has it been cold enough for the coolant to freeze in one of the hoses? Might be a simple fix if it's just a burst hose.


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Old 01-25-2011, 12:17 PM   #3
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Re: Sprung a coolant leak

the leak I had, which was not easy to find, was the heater core.

Angel
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Old 01-25-2011, 02:56 PM   #4
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Re: Sprung a coolant leak

Quote:
Originally Posted by Angel
the leak I had, which was not easy to find, was the heater core.

Angel
Hey Angel,

i notice in your sig that you own or (owned) Chalet ltw. I have looked at Chalet xl1938.
what do you think of chalet quality.

gerry
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Old 01-25-2011, 03:45 PM   #5
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Re: Sprung a coolant leak

Quote:
Originally Posted by Angel
the leak I had, which was not easy to find, was the heater core.

Angel
Hmmm yes mine seems to leak to far forward... but I will check that component...
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Old 01-25-2011, 05:05 PM   #6
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Re: Sprung a coolant leak

What engine do you have in your van?
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Old 01-26-2011, 12:33 AM   #7
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Re: Sprung a coolant leak

L31 5.7 Vortec (I think that is the 350)
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Old 01-26-2011, 09:30 AM   #8
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Re: Sprung a coolant leak

gerry,

I think the quality of the Chalet is very good, as good as SMB if not better. That is why they hold their price. I bought mine new so I could design it for Baja.

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Old 01-26-2011, 01:31 PM   #9
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Re: Sprung a coolant leak

Have you checked the waterpump? It has a weep hole to let you know it is about to fail. If you drive it and it doesn't leak when warm and then leaves a puddle overnight, it is very likely a waterpump. Otherwise, take off what you need to see around the engine, pressurize the system and have a good look. It could also be a freeze plug, very simple to fix if you can reach it.
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Old 01-26-2011, 02:41 PM   #10
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Re: Sprung a coolant leak

Quote:
Originally Posted by Silver350
Have you checked the waterpump? It has a weep hole to let you know it is about to fail. If you drive it and it doesn't leak when warm and then leaves a puddle overnight, it is very likely a waterpump. Otherwise, take off what you need to see around the engine, pressurize the system and have a good look. It could also be a freeze plug, very simple to fix if you can reach it.
exactly that it doesn't leak when I drive but leave a puddle overnight!

I will strip all the junk (air cleaner, water reserve etc.) around the engine and have another look...

Thanks for your message it sort of reassures me that it is not a top end repair...
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