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  #16  
Old 12-30-2011, 12:56 AM
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Join Date: Jul 2002
Location: visalia ca
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filling the rad up to the neck and running it is about the best/cheapest test. the fact that you have both symptoms, cap and fluid makes me feel that you have a bad gasket. well, actually a bad head.

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  #17  
Old 12-30-2011, 02:59 AM
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Join Date: Jun 2004
Location: brisbane,Qld.Australia
Posts: 2,062
Quote:
Originally Posted by 79Mercy View Post
Autozone has a block tester for rent(thanks Al), im gonna go pick one up tomorrow morning and test it. I'll try and make a video, other members might find it helpful one day.

Sometimes i get the feeling the coolant smells like gas, but it could be my imagination, we will find out tomorrow.

Thank you everyone for your input.
A lot of coolant additives are full of alcohol based things which is probably what you can smell.
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  #18  
Old 12-31-2011, 09:32 AM
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Join Date: Mar 2008
Location: Florida
Posts: 4,131
I used the tool from autozone and one time it faded from blue to a greenish blueish color, the other times it stayed blue.

I did have bubble coming up thru the block tester thing when cold and it was warming up. Is this normal? I thought it might be because of the coolant rising in the radiator. I still need to fill the radiator up to the neck and check that way.
__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
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  #19  
Old 12-31-2011, 05:08 PM
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Join Date: Jun 2004
Location: brisbane,Qld.Australia
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No not normal ,especially if the coolant has been maintained at the proper level. I think the headgasket is failing ,not failed yet. If the coolant anti corrosion has been maintained properly the head should be fine but if not it may be eaten through in places.
Get some quotes to replace the gasket and do ALL of the seals in the head at the same time. Replace all your hoses and timing chain and you will be set for another 30 years.
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  #20  
Old 12-31-2011, 07:44 PM
79Mercy's Avatar
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Join Date: Mar 2008
Location: Florida
Posts: 4,131
The bubbles were coming up thru the tester, thats that i thought was normal. Because there is air between the coolant level and the bottom of the tester, as the coolant level was rising the air in the rad had to go somewhere.

Im doing all the work myself, im having a MB place machine and re-build the head however.

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
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