Coolant Leak Numpty Questions! - Page 3

SD1too · 18th November 2020, 08:09

Quote:

Originally Posted by phenonix

Just gave that pipe a tug, and Kaisers part is rock solid.

OK that's good, but note Trikey's experience regarding a poor seal.

When my 'O' rings leaked I could never see it actually happening, only the aftermath. You've made a good start mopping up all the residue. Now it's just a matter of time and keen observation.

Simon

trikey · 18th November 2020, 16:59

I know it’s a long shot but check the metal coolant pipes on the subframe, these can rust badly and I have seen one spray coolant upwards towards the front of the engine block.

phenonix · 18th November 2020, 17:41

Quote:

Originally Posted by trikey

I know it’s a long shot but check the metal coolant pipes on the subframe, these can rust badly and I have seen one spray coolant upwards towards the front of the engine block.

I'll look there also, Thanks.
What was your solution to your leaking metal O rings?
Were there any similarities with my symptoms?

phenonix · 19th November 2020, 04:19

Just had another look today.
Heres what happened.
1.Turned car on and coolant almost instantly start to drip at a constant speed, i drop about every 10 seconds.
2.Looked in through manifold and the V was bone dry, even though dripping was happening.
3.Ran the car to get to 100 as this is when i thought a major loss of coolant occurred.
4.At around maybe 78 degrees i started to see coolant appearing in the V
5.Drip under car was still dripping at the same rate, had not speeded up.
6.The coolant was pooling on the drivers side section of the V of the car, also under the alternator, middle and right of V still bone dry, but still could not see where it was coming from.
7.Then i started seeing a tiny stream, very thin, of coolant seeming to come from the inlet gasket (drivers side) and sliding down to pool in the V, but when the V was initially filling with coolant this stream was not there/noticeable.
8.Ran car to 102, dripping speed did not speed up, neither did the stream of coolant into the V.
9.Turned car off, still dripping.

So it appears the manifold gasket is leaking?

COLVERT · 19th November 2020, 09:41

Well you will know for sure once you have fitted a new gasket.--

phenonix · 19th November 2020, 18:14

Would this gasket do?
I need to buy if from close by as i'd like it in a hurry.

https://www.ebay.com.au/itm/Inlet-Ma...MAAOSwrEJftIpJ

vitesse · 19th November 2020, 18:26

Quote:

Originally Posted by phenonix

Would this gasket do?
I need to buy if from close by as i'd like it in a hurry.

https://www.ebay.com.au/itm/Inlet-Ma...MAAOSwrEJftIpJ

That looks identical to the ones I have fitted, but I also added a very thin smear of hylomar esp. around the water channels, this also helps stick the gaskets to the heads without them slipping when re-fitting the inlet manifold.

Regards

SD1too · 20th November 2020, 10:11

Quote:

Originally Posted by phenonix

Would this gasket do?
https://www.ebay.com.au/itm/Inlet-Ma...MAAOSwrEJftIpJ

It will be better than just "do", it is the correct part number for your Rover!

When renewing mine (no leaks, just as a precaution after dismantling) I didn't use any additional sealant. Do tighten the screws progressively working from the centre outwards. The torque is 25 Nm.

Simon

phenonix · 20th November 2020, 17:56

Just purchased the gaskets, i'll attempt this next week, another task that i naively assumed would be a hose change to a bigger job of a gasket replacement!

Would this video on Youtube be the best bet on how to do this?

https://www.youtube.com/watch?v=0W7Gu3dPXaE

SD1too · 21st November 2020, 07:34

It's far from ideal Joe because the ancillaries installation in a ZS is different.

Looking at my notes you'll need to:
1. Drain cooling system.
2. Remove battery & its box plus air cleaner.
3. Remove plastic manifold chamber.
4. Remove ignition equipment and fuel rail.
You will now be able to reach the manifold screws. Is it the LH or RH you are removing?

There's a lot to do, particularly disconnecting all the attachments to the plastic manifold chamber, so please be absolutely certain that the source of your coolant leak really is the inlet manifold gasket before starting. Note that it's very uncommon on the KV6.

I'd recommend that you get hold of a Haynes manual if you can. It will be very helpful.

Simon

18th November 2020, 16:59	#22
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,764 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	I know it’s a long shot but check the metal coolant pipes on the subframe, these can rust badly and I have seen one spray coolant upwards towards the front of the engine block. __________________ Lest we forget..

19th November 2020, 04:19	#24
phenonix Posted a thing or two Rover 75 2001 Club Sedan V6 2.5 Join Date: Mar 2007 Location: Sydney Posts: 1,458 Thanks: 18 Thanked 9 Times in 6 Posts	Just had another look today. Heres what happened. 1.Turned car on and coolant almost instantly start to drip at a constant speed, i drop about every 10 seconds. 2.Looked in through manifold and the V was bone dry, even though dripping was happening. 3.Ran the car to get to 100 as this is when i thought a major loss of coolant occurred. 4.At around maybe 78 degrees i started to see coolant appearing in the V 5.Drip under car was still dripping at the same rate, had not speeded up. 6.The coolant was pooling on the drivers side section of the V of the car, also under the alternator, middle and right of V still bone dry, but still could not see where it was coming from. 7.Then i started seeing a tiny stream, very thin, of coolant seeming to come from the inlet gasket (drivers side) and sliding down to pool in the V, but when the V was initially filling with coolant this stream was not there/noticeable. 8.Ran car to 102, dripping speed did not speed up, neither did the stream of coolant into the V. 9.Turned car off, still dripping. So it appears the manifold gasket is leaking? Last edited by phenonix; 19th November 2020 at 04:21..

21st November 2020, 07:34	#30
SD1too Doesn't do things by halves Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007 Location: Former Middlesex Posts: 20,344 Thanks: 1,587 Thanked 3,749 Times in 3,181 Posts	It's far from ideal Joe because the ancillaries installation in a ZS is different. Looking at my notes you'll need to: 1. Drain cooling system. 2. Remove battery & its box plus air cleaner. 3. Remove plastic manifold chamber. 4. Remove ignition equipment and fuel rail. You will now be able to reach the manifold screws. Is it the LH or RH you are removing? There's a lot to do, particularly disconnecting all the attachments to the plastic manifold chamber, so please be absolutely certain that the source of your coolant leak really is the inlet manifold gasket before starting. Note that it's very uncommon on the KV6. I'd recommend that you get hold of a Haynes manual if you can. It will be very helpful. Simon __________________ "Whatever is rightly done, however humble, is noble." Sir Henry Royce. Last edited by SD1too; 21st November 2020 at 09:42.. Reason: Adding detail to earlier reply.

19th November 2020, 09:41	#25
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	Well you will know for sure once you have fitted a new gasket.--

19th November 2020, 18:14	#26
phenonix Posted a thing or two Rover 75 2001 Club Sedan V6 2.5 Join Date: Mar 2007 Location: Sydney Posts: 1,458 Thanks: 18 Thanked 9 Times in 6 Posts	Would this gasket do? I need to buy if from close by as i'd like it in a hurry. https://www.ebay.com.au/itm/Inlet-Ma...MAAOSwrEJftIpJ

20th November 2020, 17:56	#29
phenonix Posted a thing or two Rover 75 2001 Club Sedan V6 2.5 Join Date: Mar 2007 Location: Sydney Posts: 1,458 Thanks: 18 Thanked 9 Times in 6 Posts	Just purchased the gaskets, i'll attempt this next week, another task that i naively assumed would be a hose change to a bigger job of a gasket replacement! Would this video on Youtube be the best bet on how to do this? https://www.youtube.com/watch?v=0W7Gu3dPXaE