Coolant loss traced, help please.

chrislloydie · 30th April 2009, 11:19

Hi all,

While fitting my Pierburg Maf this morning, I checked the coolant level and found the expansion tank to be empty!

I did a bit of searching and have located what I believe is the reason for the coolant loss.

On the attached picture, the large pipe with the red arrow, is connected to the top drivers side of the radiator, the coolant is bubbling out from the seal between the pipe and the radiator, circled red on the picture.

I have 2 questions,

1. Can I remove this pipe to replace the seal without taking front bumper off etc, I undid the two bolts holding it, but the bolts just screw into 2 loose nuts and I'm afraid of not being able to relocate the bolts as i wont
be able to hold the nuts in place to replace the bolts.

2. Where can I get this seal from, is it available from Xpart and can I purchase the seal on its own?

Thanks for your help.

amableson · 30th April 2009, 11:24

It looks like a radiator leak to me without going into it deeper.

chrislloydie · 30th April 2009, 14:48

It's not the actual radiator that is leaking, but the seal where pipe connects to the rad is bulging out and thats where leak is coming from.

chrislloydie · 30th April 2009, 18:58

No-one any ideas?

I've looked but can't seem to find anything that will tell me a part number for this seal or if its available seperately and if so where from?

Does anyone know of anything that can be used to help seal this if I can't replace the seal? Any sealant or similar product?

Jules · 30th April 2009, 19:21

Sorry Chris not come across this problem before, so I can't help.
But it has prompted me to act now & source some O rings in Viton incase we need them during a members service.

And to think I've scrapped 3 radiators in last 2 years thinking I'd never need that top elbow for anyone

chrislloydie · 30th April 2009, 19:25

Quote:

Originally Posted by Jules

Sorry Chris not come across this problem before, so I can't help.
But it has prompted me to act now & source some O rings in Viton incase we need them during a members service.

And to think I've scrapped 3 radiators in last 2 years thinking I'd never need that top elbow for anyone

Thanks Jules. Do you happen to know of any product that can be used to seal these joints apart from the rubber seal in place. I'm thinking something like a silicone sealant, but a product that will be up to the job?

chrislloydie · 30th April 2009, 19:54

Would this stuff work to form a seal around the connection instead of dismantling?

http://cgi.ebay.co.uk/3-BOND-GASKET-...3A1%7C294%3A50

or

http://cgi.ebay.co.uk/universal-hylo...3A2%7C294%3A50

or
http://cgi.ebay.co.uk/RED-RTV-PRO-SE...3A1%7C294%3A50

Ian V · 30th April 2009, 20:14

Quote:

Originally Posted by chrislloydie

Would this stuff work to form a seal around the connection instead of dismantling?

http://cgi.ebay.co.uk/3-BOND-GASKET-...3A1%7C294%3A50

or

http://cgi.ebay.co.uk/universal-hylo...3A2%7C294%3A50

or
http://cgi.ebay.co.uk/RED-RTV-PRO-SE...3A1%7C294%3A50

HERMETITE INSTANT GASKET

Creates silicone rubber gaskets instantly.
A specially formulated orange rtv silicone rubber

Ideal for vertical and overhead application due to its non-running qualities.
With stands temperatures from -60c to +260c (maximum)
Resists oil,transmission fluids,water and anti freeze.
I have used this with good results.

chrislloydie · 30th April 2009, 20:21

Thanks Ian, I'll have a look for that.

Jules · 30th April 2009, 20:50

There you go beat me to it!

30th April 2009, 11:24	#2
amableson Gets stuck in Ex Rover 75 owner Join Date: Nov 2006 Location: Boston, Lincolnshire. Posts: 553 Thanks: 0 Thanked 2 Times in 2 Posts	It looks like a radiator leak to me without going into it deeper. __________________ Regards Andrew.[SIGPIC][/SIGPIC]

30th April 2009, 18:58	#4
chrislloydie Posted a thing or two MG ZT 135 CDTI+ Auto Royal Blue with Synergy 2. 75 Tourer cdti club Se Auto, Royal Blue, synergy 2 Join Date: Oct 2008 Location: Bancroft, Milton Keynes Posts: 1,906 Thanks: 0 Thanked 0 Times in 0 Posts	No-one any ideas? I've looked but can't seem to find anything that will tell me a part number for this seal or if its available seperately and if so where from? Does anyone know of anything that can be used to help seal this if I can't replace the seal? Any sealant or similar product? Last edited by chrislloydie; 30th April 2009 at 19:00..

30th April 2009, 19:21	#5
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	Sorry Chris not come across this problem before, so I can't help. But it has prompted me to act now & source some O rings in Viton incase we need them during a members service. And to think I've scrapped 3 radiators in last 2 years thinking I'd never need that top elbow for anyone __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

30th April 2009, 19:54	#7
chrislloydie Posted a thing or two MG ZT 135 CDTI+ Auto Royal Blue with Synergy 2. 75 Tourer cdti club Se Auto, Royal Blue, synergy 2 Join Date: Oct 2008 Location: Bancroft, Milton Keynes Posts: 1,906 Thanks: 0 Thanked 0 Times in 0 Posts	Would this stuff work to form a seal around the connection instead of dismantling? http://cgi.ebay.co.uk/3-BOND-GASKET-...3A1%7C294%3A50 or http://cgi.ebay.co.uk/universal-hylo...3A2%7C294%3A50 or http://cgi.ebay.co.uk/RED-RTV-PRO-SE...3A1%7C294%3A50 Last edited by chrislloydie; 30th April 2009 at 20:11..

30th April 2009, 20:50	#10
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	There you go beat me to it! __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block

30th April 2009, 14:48	#3
chrislloydie Posted a thing or two MG ZT 135 CDTI+ Auto Royal Blue with Synergy 2. 75 Tourer cdti club Se Auto, Royal Blue, synergy 2 Join Date: Oct 2008 Location: Bancroft, Milton Keynes Posts: 1,906 Thanks: 0 Thanked 0 Times in 0 Posts	It's not the actual radiator that is leaking, but the seal where pipe connects to the rad is bulging out and thats where leak is coming from.

30th April 2009, 20:21	#9
chrislloydie Posted a thing or two MG ZT 135 CDTI+ Auto Royal Blue with Synergy 2. 75 Tourer cdti club Se Auto, Royal Blue, synergy 2 Join Date: Oct 2008 Location: Bancroft, Milton Keynes Posts: 1,906 Thanks: 0 Thanked 0 Times in 0 Posts	Thanks Ian, I'll have a look for that.