Welcome to 911UK
The only place for Porsche, 911uk is the definitive enthusiast and resource site for the Porsche 911.
Registration is fast, simple and absolutely free, so join up today for full access to the site and benefit from latest member offers.

Porsche Classifieds
Porsche Buyers Guides
Sell Your Porsche on 911uk
Create a Free Classified Advert
Search Ads
Classified Adverts FAQ
Trade Classified Information
Buyer & Seller Fraud Protection
Consumer Rights Act
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Official Porsche Centre Reviews
Model
Stock
Porsche 911
991 : 2011- 19
997 : 2004- 91
996 : 1997-2005 43
993 : 1993-1998 5
964 : 1989-1993 2
Carrera 3.2 : 1983-1989 0
Carrera SC : 1977-1983 2
930 Turbo : 1975-1989 0
Early 911 : 1964-1977 3
Porsche Other Models
Classic : 1950-1965 0
Boxster : 1997- 14
Cayman : 2005- 16
Cayenne : 2003- 8
Macan : 2014- 0
Panamera : 2009- 1
912-914-924-928-944-968 1
959 - CarreraGT - RaceCar 1
Car Parts For Sale & Wanted
Other Items For Sale & Wanted
Wheels Tyres For Sale & Wanted
Number Plates For Sale Wanted

Porsche Services
Porsche Body Shop Repair
Paint Protection & Wrapping
Porsche Classic Insurance
Porsche Classic Parts
Porsche Classic Restoration
Porsche Design Collection
Porsche Engine Gearbox Rebuild
Porsche Heritage & History
Porsche News
Porsche Picture Gallery
Win a New Porsche 911

Porsche Parts
Body Parts, Body Styling
Brakes, Clearance
Electrical, Exhausts
Engine Cooling, Engine Electrical
Engine Rebuild, Heating Cooling
Interior Incar, Lighting
Rubber Seals, Service Parts
Steering, Suspension
Transmission, Workshop Tools
Early 911, 911 - 930, 928 - 968
964 - 993, 996 - 997, Boxster
Cayman, Cayenne, Panamera

Porsche Model Range
911 [991] 2011-Current
Porsche 911 [991]
911 [997] 2004-Current
Porsche 911 [997]
911 [GT] GT1-GT2-GT3
Porsche 911 [GT]
911 [996] 1997-2005
Porsche 911 [996]
911 [993] 1993-1998
Porsche 911 [993]
911 [RS] RS-RSR
Porsche 911 [RS]
911 [964] 1989-1993
Porsche 911 [964]
911 3.2 1983-1989
Porsche 911 3.2 Carrera
911 SC 1977-1983
Porsche 911 SC
911 [Early] 1964-1977
Porsche 911 [Early]
Boxster & Cayman
Porsche Boxster & Cayman
Cayenne & Panamera
Porsche Cayenne & Panamera

911uk Site Partners

Post new topic   Reply to topic
Author Message
Chuckmiester
Silverstone


Joined: 06 Dec 2012
Posts: 111
Location: South yorkshire


PostPosted: Mon Nov 12, 2018 6:20 am    Post subject: Coolant loss Reply with quote

Drove down to the nec for the classic car show on Saturday from Barnsley roughly 90 miles each way. Checked the oil and water yesterday and it had used around a cup full. There are no signs of any leaks anywhere. I’m thinking the worst and wondering if it could be the head gasket that’s leaking. There doesn’t appear to be any water in the oil yet. The engine was rebuilt around 5 years ago at strasse in Leeds we’re they put 6 new liners in. Does anyone have any more ideas what it could be? Thanks in advance Dont know
_________________
2003 c4s arctic silver
2017 Range Rover velar
 
  
View user's profile Send private message
   
MisterCorn
Long Beach


Joined: 08 Jan 2011
Posts: 6362
Location: Nottingham, England

2004 Porsche 996 Turbo

PostPosted: Mon Nov 12, 2018 6:58 am    Post subject: Reply with quote

How old are the radiators?. Could also be the header tank.

MC
 
  
View user's profile Send private message Visit poster's website
   
Chuckmiester
Silverstone


Joined: 06 Dec 2012
Posts: 111
Location: South yorkshire


PostPosted: Mon Nov 12, 2018 7:48 am    Post subject: Reply with quote

MisterCorn wrote:
How old are the radiators?. Could also be the header tank.

MC
radiators are around 4 years old. I replaced both of them. I thought header tank but it’s holding pressure a for a good hour at red car has been turned of.
_________________
2003 c4s arctic silver
2017 Range Rover velar
 
  
View user's profile Send private message
   
alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14476
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Mon Nov 12, 2018 7:52 am    Post subject: Reply with quote

Never compare water level until you know the system is fully down to ambient temperature - which will easily take over 5 hours. The level fluctuates a fair amount during the heating/cooling cycle due to heat expansion.

I only ever check my coolant level when the car has been stood over night unused.
_________________
2000 Manual 996 C4 Arctic Silver Convertible


 
  
View user's profile Send private message
   
Chuckmiester
Silverstone


Joined: 06 Dec 2012
Posts: 111
Location: South yorkshire


PostPosted: Mon Nov 12, 2018 7:59 am    Post subject: Reply with quote

alex yates wrote:
Never compare water level until you know the system is fully down to ambient temperature - which will easily take over 5 hours. The level fluctuates a fair amount during the heating/cooling cycle due to heat expansion.

I only ever check my coolant level when the car has been stood over night unused.
level was checked 24 hours after the car was parked up.
_________________
2003 c4s arctic silver
2017 Range Rover velar
 
  
View user's profile Send private message
   
alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14476
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Mon Nov 12, 2018 9:06 am    Post subject: Reply with quote

Thumb

Have you checked your footwell carpets? Although your heater usually gives off a wiff if that's leaking.

Best way to find a leak is leave the car runbing on the drive for 20 minutes after already up to temp. Pressire is at its highest then and everything is fully expanded so any micro-crack in your systems will them leak coolant.
_________________
2000 Manual 996 C4 Arctic Silver Convertible


 
  
View user's profile Send private message
   
alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14476
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Mon Nov 12, 2018 9:07 am    Post subject: Reply with quote

Most likely a small crack in a rad or a weeping hose joint.
_________________
2000 Manual 996 C4 Arctic Silver Convertible


 
  
View user's profile Send private message
   
Jamesx19
Spa-Francorchamps


Joined: 10 Jul 2015
Posts: 374
Location: Brighton


PostPosted: Mon Nov 12, 2018 9:20 am    Post subject: Reply with quote

I think Alex's assessment is more likely than head gasket etc.

I had a hose clip that needed nipping up. I was loosing half a cup of coolant every time I drove the car. There was no signs of leaking at all. I.e. nothing under the car. The water must have just been evaporating off.

A clue might be temperature fluctuations on the guage rather than steady 82 Deg. Which may point towards the system not fully pressurising due to a slight leak.

Demort might be able to confirm, but I presume a garage may be able to pressure the system to leak detect???
_________________
1998 C2 Manual
 
  
View user's profile Send private message
   
Chuckmiester
Silverstone


Joined: 06 Dec 2012
Posts: 111
Location: South yorkshire


PostPosted: Mon Nov 12, 2018 10:06 am    Post subject: Reply with quote

Jamesx19 wrote:
I think Alex's assessment is more likely than head gasket etc.

I had a hose clip that needed nipping up. I was loosing half a cup of coolant every time I drove the car. There was no signs of leaking at all. I.e. nothing under the car. The water must have just been evaporating off.

A clue might be temperature fluctuations on the guage rather than steady 82 Deg. Which may point towards the system not fully pressurising due to a slight leak.

Demort might be able to confirm, but I presume a garage may be able to pressure the system to leak detect???
no temperature fluctuations at all. I had it running on the drive for about half an hour and no leaks were visible. There was still pressure in the tank an hour later when I took the cap off. The cap is very tight to get off.
_________________
2003 c4s arctic silver
2017 Range Rover velar
 
  
View user's profile Send private message
   
Griffter
Monza


Joined: 22 May 2016
Posts: 226



PostPosted: Mon Nov 12, 2018 10:15 am    Post subject: Reply with quote

How often do you do a 180 mile round trip? Could it be an air pocket that finally got out?
See if it does it again, then worry about it. If it does I’d start by rigorously checking all connections, especially those you disturbed four years ago, and looking for congealed coolant around the joins.
 
  
View user's profile Send private message
   
Chuckmiester
Silverstone


Joined: 06 Dec 2012
Posts: 111
Location: South yorkshire


PostPosted: Mon Nov 12, 2018 10:34 am    Post subject: Reply with quote

Griffter wrote:
How often do you do a 180 mile round trip? Could it be an air pocket that finally got out?
See if it does it again, then worry about it. If it does I’d start by rigorously checking all connections, especially those you disturbed four years ago, and looking for congealed coolant around the joins.
not often it gets a good run like that now we have a 15 month old and another on the way. Very Happy
_________________
2003 c4s arctic silver
2017 Range Rover velar
 
  
View user's profile Send private message
   
Chuckmiester
Silverstone


Joined: 06 Dec 2012
Posts: 111
Location: South yorkshire


PostPosted: Tue Nov 13, 2018 7:46 am    Post subject: Reply with quote

Had a look at the coolant cap this morning and the part number finishes in 01. Might be worth getting the newer version before doing anything else.
_________________
2003 c4s arctic silver
2017 Range Rover velar
 
  
View user's profile Send private message
   
Ghianightmare
Monza


Joined: 25 Apr 2017
Posts: 174
Location: Dublin


PostPosted: Tue Nov 13, 2018 7:51 am    Post subject: Reply with quote

If there is white deposits around the cap on the bottle and engine bay trim, this is an indication that the lid is leaking. It only costs about £20 so it is a cheap place to start.
_________________
2002 Seal Grey C4S
 
  
View user's profile Send private message
   
Chuckmiester
Silverstone


Joined: 06 Dec 2012
Posts: 111
Location: South yorkshire


PostPosted: Tue Nov 13, 2018 8:11 am    Post subject: Reply with quote

There’s no evidence of any residue around the cap.ive not noticed it leaking before now though. I don’t know how much coolant would have to leak past the cap to leave a mark?
_________________
2003 c4s arctic silver
2017 Range Rover velar
 
  
View user's profile Send private message
   
alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 14476
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Tue Nov 13, 2018 8:21 am    Post subject: Reply with quote

Can't see it being anything to do with the cap if it's holding pressure.
_________________
2000 Manual 996 C4 Arctic Silver Convertible


 
  
View user's profile Send private message
   
Display posts from previous:   
Post new topic   Reply to topic   All times are GMT - 12 Hours
Page 1 of 1

 
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum