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Old May 16th, 2008, 07:39 PM   #1
RNajarian
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Coolant Leak

I'm Stumped.

Last Year My mechanic changed the leaking resevoir tank on my base model 2000 Boxster. A month ago my resevoir tank was near empty. I topped it off with distilled water and saw black specs about 1 mm X 1 mm floating around in the solution.

After driving it when hot it continued to leak on the passenger side in front of the rear wheel.

My Mechanic took a look at it.

NO problem with the head gasket.
NO problem with the radiator.

I have not heard what the results of the pressure test were.

Does any one have any thoughts?

Thanks

RG Najarian
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Old May 16th, 2008, 10:39 PM   #2
psl
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I had this same problem about 2 years ago...it turned out to be a faulty reservoir cap...but I also at one point inadvertantly cross threaded the cap, so it wouldn't hold pressure...either of these might be the cause?
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Old May 16th, 2008, 10:52 PM   #3
RNajarian
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That is Possible. But I did upgrade to the new improved resevoir cap. AND that does not explain the chunks in the liquid.

BUT maybe those are two different issues.
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Old May 17th, 2008, 11:13 AM   #4
ColinC
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Take a sample of the coolant - make sure those black specs arent oil. If it is oil, do a search for "boxster coolant intermix" on renntech.

Good luck,

-C
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Old May 17th, 2008, 03:57 PM   #5
JFP in PA
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If your "wrench" changed the tank, and it is still leaking in the same place, I'd say you need a new mechanic............... When you need to open up a cooling system, a full pressure test upon finishing the repair is standard proceedure to catch anything that was missed; sounds like they didn't do that....................
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Old May 17th, 2008, 10:42 PM   #6
dedes
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Quote:
Originally Posted by RNajarian View Post
I'm Stumped.

Last Year My mechanic changed the leaking resevoir tank on my base model 2000 Boxster. A month ago my resevoir tank was near empty. I topped it off with distilled water and saw black specs about 1 mm X 1 mm floating around in the solution.

After driving it when hot it continued to leak on the passenger side in front of the rear wheel.

My Mechanic took a look at it.

NO problem with the head gasket.
NO problem with the radiator.

I have not heard what the results of the pressure test were.

Does any one have any thoughts?

Thanks

RG Najarian
Sounds like a overlooked leak that got worst over time. Not sure what the small black chunks you are talking about in the coolant tank.
Did your mechanic check for any leaks after the tank was installed last year? Are the clamps/hoses ok?
Maybe some info and some pics here might help you in the right direction.
http://www.dietersmotorsports.com/te...h9-03-2003.htm

Good luck
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Old May 18th, 2008, 08:36 AM   #7
RNajarian
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Thanks for all the input gang

I am doubtful it is an oil in the coolant issue since the small chunks I saw seemed to be suspended throughout the mixture. Oil would have all surfaced

Perhaps it is a hose under the coolant tank. I thought I smelled coolant in the rear trunk recently.

Thanks. Will keep you all posted
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