D2 V8 Coolant Going Missing

[CJT]

I am after some ideas on what else to look for as to were the coolant is going in the D2.

It has always used a little bit of coolant, however seems to be going through even more now after some work.

I recently had the following repalced as they were all cracked and or leaking:

Radiator
Thermostat
All coolant hoses
The system now runs in a circuit with coolant returning to the resevior tank as designed (this has not been the case previously) and there are no visible leaks that I can now see, however it is still going through excessive coolant.

[Eevo]

i hope im wrong but might be a cracked block

[CJT]

I have unfortunately, been thinking the same thing.

It still drives fine, so I guess time will tell...

I will get around to stripping the engine down one day.

[JBM770]

Is the throttle body preheater leaking?
If its not, may still be a good idea to bypass it.
James

[Roverlord off road spares]

After its hot do you smell coolant around the engine? If so there is an external leak somewhere, it might be a seep. Sometimes hard to see, but the ends of the heads can weep, the coolant drys before it actually drips down further.

[discorevy]

Heads or gaskets ? , any milky oil ?, hydraulicking ? building pressure in system even when engine cool?

[Pedro_The_Swift]

try the simple things first,,
tape an empty coke bottle to the catch tank overflow line,
get underneath with a torch and look for stains/wetness especially between engine and gearbox,

[PhilipA]

And have a look under your floor mats.
Regards Philip A

[Collins]

Some time ago I had a persistent minor loss of coolant. Eventually tracked it down to a partial fracture of the return line spigot close to the reservoir.
Replaced reservoir and no longer suffer from coolant loss.

[Road Stone]

The little hose that runs from the top of the Rad to the expansion tank can weep where it joins the radiator but is hidden by the plastic cowling.


Worth a look.


Cheers, Jerry

[Geoff86RRC]

I recently had coolant loss and my mechanics told me the head gasket was weeping. There is a known issue in the v8 4.0 with one row of head bolts that distorts the head etc etc anyway they said you can rebuild or try a bottle of bars leaks. Bars leaks administered and all good now for 6 months. ... Just saying

Also have purchased an OBDC sender wifi and torque app and watch the temp . Nb at idle it goes to 105deg all the time but when driving sits at 90. So I am going to look at whether my fans are coming on properly at idle. Also I have been replacing fluid with pure coolant and it is not dropping now. Cheers

[PhilipA]

I recently had coolant loss and my mechanics told me the head gasket was weeping. There is a known issue in the v8 4.0 with one row of head bolts that distorts the head etc etc anyway they said you can rebuild or try a bottle of bars leaks. Bars leaks administered and all good now for 6 months. ... Just saying

Also have purchased an OBDC sender wifi and torque app and watch the temp . Nb at idle it goes to 105deg all the time but when driving sits at 90. So I am going to look at whether my fans are coming on properly at idle. Also I have been replacing fluid with pure coolant and it is not dropping now. Cheers

No there isn't a known problem blah blah. If your mechanic said that get a new mechanic. That problem was the third row of bolts that were deleted before theRV8 became 4.0 liter. For a mechanic to say that means he doesn't know much about LR .
Regards Philip A

[timdo1]

The little plastic 3 way split piece that sits at the bottom of the water pump. That cracks at the base and let's lots of water go but you can't see it leaking. Try that.