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louisiana95
Newbie


Joined: 02 May 2015
Posts: 7
Location: Wilmslow


PostPosted: Sat Feb 10, 2018 1:22 pm    Post subject: Coolant - do I have a leak? Reply with quote

Hi

3 weeks into first 911 ownership, and I love it. 54 plate Carrera 2S with full fat Hartech Rebuild. Such a great car, even at 30mph. I look forward to getting in it, and I always have to have a glance back when I park up

The coolant light came on this week just as I was getting home, so I parked up, and waited until the morning to top up. The level was visible in the reservoir, but I did manage to top up, probably less than half a litre to take it to the top line.

I have not had a 911 before, so keen to know if I may have a problem.

1. Do I have a leak, or is it normal for the cars to lose a bit of coolant?

2. When the light came on and the engine cooled, I could still see the coolant in the reservoir, but I could top up a bit. I assume it only takes a small drop in level to activate the warning?

3. Looks like all hoses at the back were replaced when the rebuild was done. I believe rads are at front, so if I have a leak, I suspect its up front somewhere. Any 'usual places' to check, or is it all covered up?

Appreciate any thoughts

Thanks in advance.

Mark
 
  
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Poker2009
Hockenheim


Joined: 09 Sep 2009
Posts: 747
Location: London


PostPosted: Sat Feb 10, 2018 3:15 pm    Post subject: Reply with quote

It is a sealed system so it should not "use coolant".

I think it would take a lot for the coolant light to come on - mine has never come on..

I was loosing coolant over three years, could not find the leak and had to keep topping up and it slowly got worse, until one day I finally started seeing coolant dripping from the exhaust pipe. I changed the water pump and still had the same problem. In the end it turned out to be to a leaking coolant tank.
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Porsche 997.1 C2S Basalt Black
 
  
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resigner
Suzuka


Joined: 19 Dec 2013
Posts: 1027



PostPosted: Sat Feb 10, 2018 3:47 pm    Post subject: Reply with quote

Get it up on a ramp when warm and look around the back area. Mine recently had a hose go and isn't unusual. Was easily spottable and it's not an expensive part or thing to get fixed. Didn't cause a problem, just had the light come on and the level dropped sharply but didn't get any hotter than usual, and just drove it after topping up with water until I got it fixed a few days later, just didn't drive far!
 
  
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Demort
Estoril


Joined: 21 Mar 2015
Posts: 3878
Location: Brighton


PostPosted: Sat Feb 10, 2018 4:50 pm    Post subject: Reply with quote

Just keep an eye on it for now.

0.5 ltr is not enough to bring on the light .. a guess would be about 1 - 1.5 ltrs before it would .
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7pm - 9pm
At an Indy these days !
 
  
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Phil 997
Shanghai


Joined: 05 Dec 2015
Posts: 11306
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Sat Feb 10, 2018 5:21 pm    Post subject: Reply with quote

If its leaking from the rad you should smell a sweet smell when close to it , do you ever smell a sweet smell in the cabin. If it was topped up just before you picked it up it maybe an air block.Sometimes you need to top it up several times while the airlock is sorting its self out . best to just keep an eye on it and see if the level moves or keeps dropping etc . Thumb
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911 Owners,Some Invest In The Future,
Others Enjoy The Moment Today.
 
  
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pancobalt
Spa-Francorchamps


Joined: 02 May 2015
Posts: 259
Location: surrey


PostPosted: Sat Feb 10, 2018 5:22 pm    Post subject: Reply with quote

Yep get car up on a ramp and inspect all pipes from rads back to the engine.

The pipes up front are made of chocolate and a known weak spot. I had the near side front pipes replaced under warranty last year.

On the offside pipes i have pink crystals forming , not leaking enough to do under warranty just yet Evil or Very Mad

Get engine up to temp , turn off and place clean cardboard beneath front and back to try and trace the dripping pipe
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2005 c2s blue.
 
  
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Jam911
Barcelona


Joined: 31 Oct 2010
Posts: 1331



PostPosted: Sun Feb 11, 2018 12:11 pm    Post subject: Reply with quote

I have suffered a serious coolant hose issues/leaks.

They were all replaced and it cost lots.

And the coolant leak light never came on.

I would get it checked quickly.
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Ex '99 2.5 Boxster
 
  
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bobi61
Trainee


Joined: 13 Mar 2016
Posts: 91



PostPosted: Sun Feb 11, 2018 2:58 pm    Post subject: Reply with quote

Hi just back from a trip from Wigan to Nottingham,, before I set off just checked oil and water levels as I only use car at weekends. On way back from Nottingham in the first 10 mins water level warning light came on. I topped up at garage and it came on again on M62,,no sign of a leak just having to top up a lot,,, heater blowing cold as well. Got home slowly and drove car into garage and big drip of red coolant middle to left side of engine. Weirdly when I topped up before we set off a small amount of coolant under cap. Ant ideas ??
 
  
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louisiana95
Newbie


Joined: 02 May 2015
Posts: 7
Location: Wilmslow


PostPosted: Sun Feb 11, 2018 4:48 pm    Post subject: Reply with quote

Thanks for advice, sounds like a leak then. Cardboard now under the car, lets see what the morning brings.

Cheers

M
 
  
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pancobalt
Spa-Francorchamps


Joined: 02 May 2015
Posts: 259
Location: surrey


PostPosted: Sun Feb 11, 2018 6:17 pm    Post subject: Reply with quote

[quote="louisiana95"]Thanks for advice, sounds like a leak then. Cardboard now under the car, lets see what the morning brings.

Cheers

M[/quote


Try and remain optimistic , you never know it might only be a £50 problem. I do know especially with leaks , its a slow diagnosis and considered process of elimination.

I had an old bmw 320i loosing coolant once. Impatient mechanic replaced thermostat, then waterpump, still no joy. Turned out to be a very small concealed crack in the expansion tank. £20 part and 30 mins to replace.
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Many things have fallen, only to rise higher.

2005 c2s blue.
 
  
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jonno_
Monza


Joined: 29 May 2014
Posts: 196
Location: Oxfordshire

2005 Porsche 997 Carrera 2S

PostPosted: Tue Feb 13, 2018 6:50 pm    Post subject: Reply with quote

In advance of further into......
Idle speculation:

Expansion tank cap
Expansion tank split under pressure
Corroded pipes to rads
Big hole in rad

Just possibilities, obvs.
Wonder what it'll be?
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997.1 Seal Grey c2s manual, ltt, mobridge, zunsports, carrera IIs (summer)
 
  
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