I know this will irritate some but......

Dhammadad · Feb 13, 2021

Got my 2001 TD5 back from a very highly thought of and reputable LR mechanic of over 30 years after noticing coolant leaking from fuel cooler. He pressure tested and once replace O'Rings (which were square!!) I got what we call the Nik Tick down here, I was confident it was good to go. But, it's STILL losing coolant. He tested for cracked head, etc.....I've tried bleeding myself (elevating Expansion Tank, till smooth flow of coolant, replaced cap with LR.. original, even elevated the front of vehicle about 18" and bled again, done this too whilst at 1500 Revs. Still getting about an inch drop in ET level overnight. Other than that runs fine and heater etc works spot on.

Any ideas VERY welcomed!!!

sierrafery · Feb 13, 2021

Dhammadad said:
Still getting about an inch drop in ET level overnight

Do you mean that if you dont top it up then after 4 nights the tank gets empty ?

Henry_b · Feb 13, 2021

That would leave one hell of a puddle when sitting on your drive i'd of thought..

lightning · Feb 13, 2021

You don't say if the coolant level continues to fall until the expansion tank is empty?

After changing the coolant, my 2005 TD5 always settles at just under half full in the expansion tank.

lf l top it up to the "high" mark it soon drops, but then stays at just under half.

lt's done this for the last 70,000 miles so l don't think there's a fault.

lf the coolant level continues to fall, then it could be that it's being pressurised by a fault in the cylinder head, not necessarily a crack but maybe the head gasket.

l believe that this was more likely on the earlier TD5

Dhammadad · Feb 14, 2021

sierrafery said:
Do you mean that if you dont top it up then after 4 nights the tank gets empty ?

I can't answer that as I wouldn't let it get that low.

Dhammadad · Feb 14, 2021

lightning said:
You don't say if the coolant level continues to fall until the expansion tank is empty?

After changing the coolant, my 2005 TD5 always settles at just under half full in the expansion tank.

lf l top it up to the "high" mark it soon drops, but then stays at just under half.

lt's done this for the last 70,000 miles so l don't think there's a fault.

lf the coolant level continues to fall, then it could be that it's being pressurised by a fault in the cylinder head, not necessarily a crack but maybe the head gasket.

l believe that this was more likely on the earlier TD5

Okies....I'll leave it without topping up and see how it gets on. Maybe I am being too cautious re the 'Level' mark?

Colthebrummie · Feb 14, 2021

The level marks are only for the benefit of 'Work Opportunity' kids doing the services at main dealers.

Col

KISSMYAURA · Feb 14, 2021

Colthebrummie said:
The level marks are only for the benefit of 'Work Opportunity' kids doing the services at main dealers.

Col

The level will move up and down a bit.....hence expansion, and way it has range (min- max) ....thus higher when running & warm, lower when cold. As long as its between the min and max when cold you are all good.

lightning · Feb 14, 2021

As above, if l top mine up to over half full it soon drops to just under half.

lt's always done this, it doesn't drop any further than about 1cm below half full in the tank (checked in the morning when engine is cold)

Dhammadad · Feb 15, 2021

KISSMYAURA said:
The level will move up and down a bit.....hence expansion, and way it has range (min- max) ....thus higher when running & warm, lower when cold. As long as its between the min and max when cold you are all good.

Don't think there is a min/max level on my Expansion Tank. Only a 'level when cold'....which it's never level to

I know this will irritate some but......

Dhammadad

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sierrafery

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Henry_b

Think outside, no box required.

lightning

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Dhammadad

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Dhammadad

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Colthebrummie

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KISSMYAURA

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lightning

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Dhammadad

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