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Apr 5, 2008 11:03:54 AM

Michael (ex. partyboy): Pilot; Loc: Zurich, Switzerland; Posts: 371, Gallery; Registered on: Jan 23, 2003

leaking 996 mk1

Dear all

I'm a little bit confused. I was picking up my car 3 weeks ago from service. Today I drove some kilometers to town an back without really pushing the car. After coming home the car was parked in the garage for an hour. 9 degrees air temperature. I don't think that the air conditioning is is producing water.
Anyways, when I was back in the garage an hour later, there was a wet spot under the engine on the left side of the car. Let's say some deciliter or a glass of water.
I was checking the liquid with my fingers. It feels like water. It is colorless but it is a little bit sticky when it is drying out on my hand. It has not really a smell. The liquid running over the header on from there dropping to the ground.

What could it be, and has someone an advice what to do?

Thanks in advance!!

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Apr 5, 2008 11:52:51 AM

Michael (ex. partyboy): Pilot; Loc: Zurich, Switzerland; Posts: 371, Gallery; Registered on: Jan 23, 2003; Reply to: Michael (ex. partyboy)

Re: leaking 996 mk1

In a second observation on another surface outside of the garage I realized that the liquid is light yellow and fells like water on my fingers...Is it cooling water??

an where is it coming from when it is running down the headers?

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Apr 5, 2008 8:36:50 PM

Moogle: Rennteam Master; Loc: Bay Area , United States; Posts: 5019, Gallery; Registered on: Aug 9, 2003; Reply to: Michael (ex. partyboy)

Re: leaking 996 mk1

I really want to say RMS (rear main seal leak)... It is a very common occurance on all 996s (except gt/turbo)

But that would be an oil leak and does not fit your description.

Have it checked out by the dealer.

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Apr 6, 2008 3:25:30 AM

Bronston: Newbie; Loc: WA; Posts: 1, Gallery; Registered on: Jan 13, 2008; Reply to: Michael (ex. partyboy)

Re: leaking 996 mk1

It may be the AC. The AC system is also used to dry the air for the defogger on the windsheild. Many modern cars need the AC to run to keep the cabin air dry enough to avoid fogging the windows all around.

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Apr 6, 2008 10:51:01 AM

Matt C: Veteran; Loc: Switzerland , Switzerland; Posts: 1092, Gallery; Registered on: Apr 28, 2003; Reply to: Bronston

Re: leaking 996 mk1

A couple of weeks ago I had a leak in the cooling system due to a marten that obivously like my car very much. The liquid was redish tough, but also "felt" like water between the fingers.

The marten had biten right next to the cooling water pump which is buried deep in the engine compartment. You couldn't see where it was coming from even when laying under the car. The water was dripping at several places not even close to the actual holes. And it was only dripping as long as the engine was still warm.

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Apr 6, 2008 10:56:55 AM

pawelmontana: Junior; Loc: Europe; Posts: 122, Gallery; Registered on: Feb 19, 2007; Reply to: Matt C

Re: leaking 996 mk1

I went to a track day yesterday and a 944 came back to the parking lot with a lot of vapor coming out from under the bonnet. I wanted to check if it wasn't by chance washer fluid splashed on hot headers. I touched and smelled it and it felt initially like water, but was somewhat sticky when drying. It was definitely Porsche engine coolant, so I suppose yours is too.

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Apr 9, 2008 7:52:23 AM

Michael (ex. partyboy): Pilot; Loc: Zurich, Switzerland; Posts: 371, Gallery; Registered on: Jan 23, 2003; Reply to: pawelmontana

Re: leaking 996 mk1

On monday morning I went angry to the dealer.

After telling him what happend over the weekend with the liquide, he agreed and said, he was filling probably a little bit too much of cooling liquide in 2 weeks ago.
there is an emergncy hose over the exhaust pipes where the liquide can exit if it is too much in the system.
he leveled the car and took 1.5 liter of liquide out. the problem is solved now, no more leaking.

but I have to say, I would appreciate to have a dealer who is not filling in too much liquids. imagine having a car smoking from the engine compartment while driving and leaking whiling parking...you definitely have to think it's totally broken, but it is only a dealer filling in too much liquid....

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May 30, 2008 7:32:55 PM

Michael (ex. partyboy): Pilot; Loc: Zurich, Switzerland; Posts: 371, Gallery; Registered on: Jan 23, 2003; Reply to: Michael (ex. partyboy)

Re: leaking 996 mk1

To be honest, in the end it was something serious. The leaking came again, it was the waterpump. Inside the pump the parts had gone, and it was leaking under pressure like hell...

I changed now the pump, the system is running and the leaking has gone. Problem is solved!!

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