2004 landrover discovery td5 coolant leak source

I found my landy coolant level always decreases after driving some time. But I do not see any drops on parking place, I can see oil sump is wet. Any idea?

A known "hidden" place for them to leak is a rubber pipe / blank at the rear of the near side of engine under the turbo.

It depends on what year you have as the earlier ones ( Sorry , just read it in the title, yours will have the blank) have a pipe that connects the oil cooler to a metal pipe that goes around the rear of the engine , later models approx 53 onwards have this pipe blanked off with a rubber blank piece.

Cheers

Example piccie from one I changed recently.


Cheers

Thanks! Can you show me your link where you changed it please?

I had a similar problem, turned out the water pump and seals were shot. Replaced the pump and seals and no more loss of coolant.

Kaijun said:

Thanks! Can you show me your link where you changed it please?

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Did not post it when I did it, it is easy to find, let the engine cool down, and reach under the turbo you will soon come across it. ( in the picture you can just see the side of the oil filter on the LH side, as reference) You may find using a mirror will help you see if it is an issue. Or if you want easy access then removing the turbo heatshield makes life very easy.
I fitted a silicone blanking plug that cost about £3 from ebay.

Of course it could be from somewhere else.

Cheers

I struggled to find how to remove heat shield which is fixed at other end.

Hi Neilly, I take a picture of oil cooler, it looks different from yours. It has a robber pipe other than a cap. It looks dry.

OK, well that is good news. Did you feel around it as the leak can be very small and will just drip.

I am surprised as all the later ones I have seen from mid 2003 onwards have it blanked. Have to love Landrover and their need to keep changing things.

Cheers

One suggestion I've seen is to tie a small bottle onto the expansion tank overflow tube and drive it. If there's water in it it's probably the pressure cap - which also needs to be on tight.
HTH,
Griff

Thanks Griff! I tried it. So far I have not found coolant level drops again. It is likely to be caused by pressurised cap. I keep watching it.

They are prone to failure and do need doing up tight.
Griff

My guess is the water pump.

Nigel1943 said:

My guess is the water pump.

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+1