Helpful ReplyCoolant leak repaired..

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Contraband
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2014/03/09 17:03:56 (permalink)

Coolant leak repaired..


I have had a small leak for about a year now from the lower of the 2 coolant pipes in the left wheel arch. A common fault I am told.
I don't think I have put a litre of coolant in, but it has been on my mind to get it done incase it got any worse this year.
So I eventually got round to doing this job today.....
Jacked up, wheel off and a basin to catch the coolant. I decided not to drain the system and hoped I would not lose too much coolant.
I then took the plastic wheel arch liners out... Just a few screws. This now exposes the other end of the pipe.


I then used a screwdriver to release the retaining spring and pulled the higher end out first. Only lost about 500ml at this point.


Then the corroded lower end. About another 500ml in total came out...


You can see the state of the connector here... No wonder it was leaking. The new one is on the left...


I fitted the new pipe with a bit of instant gasket just to be on the safe side and pushed the clips back on... Job done.
I will top up and bleed the system through the week. When I am sure there are no more leaks I am going to put grease around the collars of all the exposed pipe fittings as this problem has been caused purely by corrosion from exposure to water coming from the wheels. The grease should waterproof them a bit....
Happy days... Time for wine.
Motorhead
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RE: Coolant leak repaired.. 2014/03/09 18:33:24 (permalink)

Well done Archie. A good job done.

Hopefully Kevan will put this under the Cayman Technical Articles section for future reference.

Jeff

987.2 Cayman S
North Bedfordshire
PCGB R10 and R24
Andy Fagan
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RE: Coolant leak repaired.. 2014/03/09 18:50:17 (permalink)
Good job!

Current:
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Giff
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RE: Coolant leak repaired.. 2014/03/09 19:40:21 (permalink)
Nasty, I just assumed the collars were aluminium, will have to keep an eye on them from now on..
Buddy
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RE: Coolant leak repaired.. 2014/03/10 16:16:42 (permalink)
Good article I'll move it to the tech articles section in a few days.

Kevan
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Contraband
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RE: Coolant leak repaired.. 2014/03/15 19:02:48 (permalink)
That's the system bled now and the car has been take for an hours "spirited drive" and it's leak free.
I saw my engine for the first time today. I had to remove the covers to bleed the system. You can see the blue filler cap for the water on the right......

Motorhead
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RE: Coolant leak repaired.. 2014/03/16 18:59:16 (permalink)

Archie,

Did you remember to check the PAS fluid level when you had the engine cover off?

Yes, that collar does look very badly corroded. Pity they're not aluminium or stainless steel, but I suppose that it's all part of the cost-cutting exercise these days.

Glad you're sorted.

Jeff

987.2 Cayman S
North Bedfordshire
PCGB R10 and R24
Contraband
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RE: Coolant leak repaired.. 2014/03/16 19:32:42 (permalink)
I did jeff... My natural curiosity would never allow me to see a cap and not remove it for a wee look !
It was above the low and below the max..
ballinger
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RE: Coolant leak repaired.. 2014/05/01 15:45:27 (permalink)
Many thanks for the information and guess what? Mine is in having a service and the garage have indicated that there is a leak coming from the front pipes where they meet the metal pipe - Do'h. What would a garage charge to repair it do you think.
Ta,
Bob
paulbox
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RE: Coolant leak repaired.. 2014/05/01 18:49:36 (permalink)
I had mine replaced under warrantee for which the OPC submitted an invoice just short of £900.

Paul
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RE: Coolant leak repaired.. 2014/05/02 08:29:38 (permalink)
Thanks Paul and what a price for something which is just a hose!
After questioning the OPC technicians they have said "we have lots of these coming in". So, is there a manufacturing problem or is there a design problem because it clearly is an issue and an expensive issue. Richard Hamilton may be able to advise us further regarding other models (they probably all use the same connection).

The vehicle is nearly 6 years old now and has only covered 16,000 miles, so it has had a very gentle life. I'm waiting for OPC to investigate and should find out soon.
Kind regards,
Bob

Chris_in_the_UK
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RE: Coolant leak repaired.. 2014/05/02 09:02:40 (permalink)
I have a set of hoses waiting for me to swap them. My indy has indicated that the average lifespan is around 5-6 years and they can start to weep. Mine were an 'advisory' at the last service so I am going to change them all given the low cost of the parts.
post edited by Chris_in_the_UK - 2014/05/02 09:03:03

Rgds.
Chris
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RE: Coolant leak repaired.. 2014/07/22 14:36:57 (permalink)
My Indy told me that on my previous 996, which has the same hose design, it's usually the O rings which fail and let the coolant past, then the corrosion starts if the problem is left for any length of time. So when the 996 developed a leak I tried to order an O ring - no chance of course! I had to buy the new hose and an adapted housing due to a design change! Cost was about £50.

So if you can find an O ring supplier and you get in quick before corrosion sets in, it could be a cheap fix.

Now that I have a 7 year old Cayman I'll we watching closely for the first sign of a drip...
pipknight
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RE: Coolant leak repaired.. 2014/08/22 19:17:02 (permalink)
Hi All
As a new member, I read the article with amazement, as my '06 Cayman S has been into a Porsche Specialist who notified me of this n/s leak and quoted for both sides nearly £700....... Where do they get these fancy prices from.? Does anyone know the retail cost of both pipes, as I may try the fix myself.
Chris_in_the_UK
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RE: Coolant leak repaired.. 2014/08/22 20:16:30 (permalink)
A set of 4 (both sides) is around £70 plus VAT from your local OPC less a bit of discount for being a PCGB member.

ORIGINAL: pipknight

Hi All
As a new member, I read the article with amazement, as my '06 Cayman S has been into a Porsche Specialist who notified me of this n/s leak and quoted for both sides nearly £700....... Where do they get these fancy prices from.? Does anyone know the retail cost of both pipes, as I may try the fix myself.


Rgds.
Chris
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RE: Coolant leak repaired.. 2014/08/22 20:31:26 (permalink)
Thanks Chris for the info. I still can't understand where the price of £700 or even £900 comes from for full fitment of these pipes.
As my Cayman is still new to me, how do I remove the rear engine cover, which is situated in the rear boot area.? Be interested in having a peep in there. Any help would be appreciated.
Pipknight
Motorhead
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RE: Coolant leak repaired.. 2014/08/22 20:39:42 (permalink)

Re the engine cover removal, have look at this article Philip: http://www.planet-9.com/reviews/service-items/p12-porsche-engine-cover-26amp-3b-air-filter-removal.html

Jeff

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pipknight
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RE: Coolant leak repaired.. 2014/08/22 21:36:34 (permalink)
Thanks Jeff for the info; great article.
Cameron
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RE: Coolant leak repaired.. 2015/01/26 09:05:00 (permalink)
I think the high Porsche prices come from anticipating changing the two aluminium fluid pipes that cross the car alongside the steering rack. Changing the rubber pipes is straightforward if they come apart from these cross pipes; mine would not come apart even on the bench, so I had to change both cross pipes on my 06 Cayman S, and wouldn't be in a hurry to do it again! I think the best thing is to separate them every couple of years and re-lubricate with silicone grease to prevent terminal seizure.

Max
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RE: Coolant leak repaired.. 2015/02/18 20:45:17 (permalink)
I noticed a small coolant leak on my 2008 Boxster and my local OPC confirmed it was coming from the front hoses. They have to-day offered to replace the hoses but not the aluminium pipes for £500. Apparently it's 3 hours of labour and can be tricky but I still think this is a crazy price.

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