Chances that the water is being lost through evaporation in the combustion process had a diesel Passat that did exactly that no mayo signs but when it got hot water wasn’t in the combustion chamber

Last edited by Jamiehol on 22nd Oct 2019 7:19am. Edited 1 time in total

Even really bad cooks can't burn water (but I know what you mean...) .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Sorry chaps. I don’t understand that last 2 posts??

Where would the water be getting burnt? Regards

Daz

-------------------------
2011 (61plate) 4.4 tdv8
sumatra black

previous cars

e46 m3
e53 x5

Interesting Read .
Question a porous block though, surely you would have an issue with the engine components before the block. No signs of snail trails around the engine showing possible leaks.

How long have you been topping up the coolant system, how often & what quantity?.
Any signs of water leaks, smell of antifreeze when hot etc.
Has the engine ever over heated?.
Any history of coolant issues, work being carried out previously by previous owners etc.
White smoke being omitted from the exhaust?.

More than likely the coolant is entering the cylinders from another means rather than a porous block.

We await the update (bet they suggest an exchange engine)

Have you put fluro dye in the coolant yet ?

Coolant may be getting into the combustion chamber via head gasket and being 'burnt' off (converted to steam).
Usually the coolant system would get pressurised by the combustion gases if there's a leak into the combustion chamber which leads to bubbles and oil in the system (mayonnaise). There's a simple check for gases in the coolant with colour changing dye which snifs the gases in the expansion tank (called a 'block tester') or it can be checked for CO2 content with an exhaust gas analyser.
It doesn't always happen though, coolant can leak into the combustion chamber without causing a reverse effect to the coolant system. A Leak Down test may help although pressures would be less than happens during combustion so may not show issues. The other check would be inspection of the combustion chambers for effects of the 'steam' cleaning caused by a coolant leak.
A bad leak would be obvious by steam in the exhaust when running.

What sort of loss are we talking here?

'Undetectable' smaller leaks would be stuff like the heater matrix although bad leaks there would lead to steaming up of the cabin when running.

How long have you been topping up the coolant system, how often & what quantity?.

Only topped it up twice in past 2 weeks. Once was the 1st time I was aware of the problem and put 1 litre in. 5 days later 1/2 litre.

Any signs of water leaks, smell of antifreeze when hot etc.

No signs of water leaks. I have noticed a few time’s a hot smell after getting out of the car.

Has the engine ever over heated?.

not that I am aware of.

Any history of coolant issues, work being carried out previously by previous owners etc.
White smoke being omitted from the exhaust?.

Only 1 previous owner. No history of any coolant work at all.


More than likely the coolant is entering the cylinders from another means rather than a porous block. Regards

Daz

-------------------------
2011 (61plate) 4.4 tdv8
sumatra black

previous cars

e46 m3
e53 x5

I hate to ask but... you are sure you put the new coolant in the hole it is supposed to go in.

Yes buddy. Regards

Daz

-------------------------
2011 (61plate) 4.4 tdv8
sumatra black

previous cars

e46 m3
e53 x5

Would it be possible to get a list of places that coolant could go?

Or would it be too big or too hard to give every possibility?[/img] Regards

Daz

-------------------------
2011 (61plate) 4.4 tdv8
sumatra black

previous cars

e46 m3
e53 x5

Should I try this??? And if so is one bottle enough?

UV Dye & UV Torch Kit Leak Detection Fluid For Car Cooling Antifreeze System RLD2 https://www.amazon.co.uk/dp/B00TU8VCB4/ref...RDbHMBW7CD Regards

Daz

-------------------------
2011 (61plate) 4.4 tdv8
sumatra black

previous cars

e46 m3
e53 x5

Get a large dose of k seal in there
Run it, say nought to anyone, and see how it goes.
If it's a tiny leak flashing to steam that would seal it.
That's what I'd try before launching a lot of money at it.

compression test?
. Cheers, Greg
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2011 Vogue SE 4.4 with lots of toys in Stornaway

will a compression test help much? Also are they easy to do on a diesel v8? Regards

Daz

-------------------------
2011 (61plate) 4.4 tdv8
sumatra black

previous cars

e46 m3
e53 x5

not sure on a diesel actually.

but you'll know if your head gaskets are ok.

less work to try dingg1's suggestion ^^

just thinking of the basics....

. Cheers, Greg
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2011 Vogue SE 4.4 with lots of toys in Stornaway