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 Mk5 2.0 GT Tdi Losing Coolant.

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Buey

Buey

Male Number of posts : 483
Age : 42
Location : Ely
Drives : Mk1 VW Golf Cabrio & Seat Leon FSi
Registration date : 2009-02-03

Mk5 2.0 GT Tdi Losing Coolant. Empty
PostSubject: Mk5 2.0 GT Tdi Losing Coolant.   Mk5 2.0 GT Tdi Losing Coolant. EmptyThu Mar 03 2011, 11:53

Its losing coolant at an extremely low rate, can drive it for 300 miles then the light comes on and only have to top it up slightly.

We have run a pressure test and no sign of losing any pressure. No leaks found at all, from pipes radiator or anywhere. The car has been taken to VW in Ipswich and they cant find a fault, but here is the funny part... they want me to spend 2352 on a new cylinder head because thats the only thing it can be apparently. Instantly, F and Off sprang to mind.

I was hoping someone here might have an idea.
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Tiz



Male Number of posts : 3773
Age : 29
Location : Wimblington nr March - Cambs
Drives : myself mental
Registration date : 2008-01-28

Mk5 2.0 GT Tdi Losing Coolant. Empty
PostSubject: Re: Mk5 2.0 GT Tdi Losing Coolant.   Mk5 2.0 GT Tdi Losing Coolant. EmptyThu Mar 03 2011, 13:03

tried a different expansion tank cap? If the cap goes weak and allows air to get by the water can boil and thus will evaporate. Im guessing the pressure test you did was through the expansion bottle which wouldnt show up a dodgy cap. Thats the first thing i would change.
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Buey

Buey

Male Number of posts : 483
Age : 42
Location : Ely
Drives : Mk1 VW Golf Cabrio & Seat Leon FSi
Registration date : 2009-02-03

Mk5 2.0 GT Tdi Losing Coolant. Empty
PostSubject: Re: Mk5 2.0 GT Tdi Losing Coolant.   Mk5 2.0 GT Tdi Losing Coolant. EmptyThu Mar 03 2011, 14:24

Tiz wrote:
tried a different expansion tank cap? If the cap goes weak and allows air to get by the water can boil and thus will evaporate. Im guessing the pressure test you did was through the expansion bottle which wouldnt show up a dodgy cap. Thats the first thing i would change.

Not tried that, seems a sensible explanation, you'll make my day if that is all it is.
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guy
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guy

Male Number of posts : 1689
Age : 51
Location : Littleport
Drives : MK 1, 2, 2, 3, 4, 4, T5
Registration date : 2009-09-15

Mk5 2.0 GT Tdi Losing Coolant. Empty
PostSubject: Re: Mk5 2.0 GT Tdi Losing Coolant.   Mk5 2.0 GT Tdi Losing Coolant. EmptySun Mar 06 2011, 17:17

I'm glad Tom said it, If you pressure test it you do it at the cap..........if its burning it, it'll show in the hydrocarbons when you stick the four gas analyzer up it's bum, so by logical conclusion if it doesnt show on the analyzer its the cap.

I had to read that three time, it does make sense doesnt it.

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'08 LWB T5 Transprter. '90 MK2 3dr 1300 in white. '95 Mk3 3dr VR6 Highline. '97 mk4 5dr gti 20vi n indigo, '00 mk4 3dr Gti 20v, '91 MK2 5dr GTI in black.


Last edited by guy on Sun Mar 06 2011, 20:31; edited 1 time in total
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Lupton_20vt

Lupton_20vt

Male Number of posts : 6815
Age : 29
Registration date : 2009-02-01

Mk5 2.0 GT Tdi Losing Coolant. Empty
PostSubject: Re: Mk5 2.0 GT Tdi Losing Coolant.   Mk5 2.0 GT Tdi Losing Coolant. EmptySun Mar 06 2011, 19:04

My money would be on the cap too. I am on my third one.
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Buey

Buey

Male Number of posts : 483
Age : 42
Location : Ely
Drives : Mk1 VW Golf Cabrio & Seat Leon FSi
Registration date : 2009-02-03

Mk5 2.0 GT Tdi Losing Coolant. Empty
PostSubject: Re: Mk5 2.0 GT Tdi Losing Coolant.   Mk5 2.0 GT Tdi Losing Coolant. EmptyWed Mar 16 2011, 22:00

Well, we tried a new cap and it still lost coolant. So I sent the car to Richard at HRD in Ely, he has had it since Monday and confirmed the head is cracked ever so slightly......... Bugger. This is getting more common on the mk5's it seems.
With a new cylinder head priced at 850+ and a lot of labour, I need to find a recon or used head, to try to save as much money as I can.
Thanks for your input though peeps.
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vw clarkson

vw clarkson

Male Number of posts : 196
Age : 25
Location : girton,cambridge
Drives : mk 2 golf
Registration date : 2011-01-11

Mk5 2.0 GT Tdi Losing Coolant. Empty
PostSubject: Re: Mk5 2.0 GT Tdi Losing Coolant.   Mk5 2.0 GT Tdi Losing Coolant. EmptyWed Mar 16 2011, 22:06

Buey wrote:
Well, we tried a new cap and it still lost coolant. So I sent the car to Richard at HRD in Ely, he has had it since Monday and confirmed the head is cracked ever so slightly......... Bugger. This is getting more common on the mk5's it seems.
With a new cylinder head priced at 850+ and a lot of labour, I need to find a recon or used head, to try to save as much money as I can.
Thanks for your input though peeps.

Thats a bummer mate.
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billybug

billybug

Male Number of posts : 4530
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Location : Ontario, Canada
Drives : 1993 Mk3 Golf
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Mk5 2.0 GT Tdi Losing Coolant. Empty
PostSubject: Re: Mk5 2.0 GT Tdi Losing Coolant.   Mk5 2.0 GT Tdi Losing Coolant. EmptyThu Mar 17 2011, 09:26

850+!! :O
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Buey

Buey

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Mk5 2.0 GT Tdi Losing Coolant. Empty
PostSubject: Re: Mk5 2.0 GT Tdi Losing Coolant.   Mk5 2.0 GT Tdi Losing Coolant. EmptyThu Mar 17 2011, 10:43

Just got a used Cylinder head for 280 delivered.

Bargain I think, good job I had my striped jumper on and my 'swag' bag with me.
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shippy666

shippy666

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Registration date : 2010-03-17

Mk5 2.0 GT Tdi Losing Coolant. Empty
PostSubject: Re: Mk5 2.0 GT Tdi Losing Coolant.   Mk5 2.0 GT Tdi Losing Coolant. EmptyThu Mar 17 2011, 18:39

a right result there mate Mk5 2.0 GT Tdi Losing Coolant. 680462
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