FFS! Mystery coolant disappearance

tomcat59alan said:

for some reason I thought you had the diesel

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You can tell he is one of us really
he just bought the wrong engine

I think this is the engine that has a pipe front to back sitting in the v of the block that can leak at the back unseen as it evaporates @Henry_b will know more.

brianp38dse said:

I think this is the engine that has a pipe front to back sitting in the v of the block that can leak at the back unseen as it evaporates @Henry_b will know more.

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Think that's the 4.2 supercharged Jag engine you're thinking of, done one on an XJR and it's a tw*t,

As Alan says it is an AJV8 affliction..

OP has a RV8..

They can leak from many places..

Front cover
Water pump
Radiator
thermotwat housing

A common one is the throttle body leaking water onto a scalding hot rocker cover and dripping on to the exhaust, so it is "untraceable"

Another one is the intake manifold has 2 large cooling ports each side and the rear bolts of the manifold are known to back out slowly (I have no idea why) torquing the rear intake manifold to spec again can stem a leak...

Coolant loss if an annoyance.

But it is either eating it or leaking it!

Henry_b said:

As Alan says it is an AJV8 affliction..

OP has a RV8..

They can leak from many places..

Front cover
Water pump
Radiator
thermotwat housing

A common one is the throttle body leaking water onto a scalding hot rocker cover and dripping on to the exhaust, so it is "untraceable"

Another one is the intake manifold has 2 large cooling ports each side and the rear bolts of the manifold are known to back out slowly (I have no idea why) torquing the rear intake manifold to spec again can stem a leak...

Coolant loss if an annoyance.

But it is either eating it or leaking it!

Click to expand...

.

I was going on the fact the op put down 4.4 v8.

Henry_b said:

As Alan says it is an AJV8 affliction..

OP has a RV8..

They can leak from many places..

Front cover
Water pump
Radiator
thermotwat housing

A common one is the throttle body leaking water onto a scalding hot rocker cover and dripping on to the exhaust, so it is "untraceable"

Another one is the intake manifold has 2 large cooling ports each side and the rear bolts of the manifold are known to back out slowly (I have no idea why) torquing the rear intake manifold to spec again can stem a leak...

Coolant loss if an annoyance.

But it is either eating it or leaking it!

Click to expand...

I will be happy with leaking it! It points to a leak somewhere, I changed the oil cooler when I serviced the gearbox... that's my first check, Alternator replaced at the same time... second check. I love my RR to bits, don't use her much but when I do I feel like a Lord. Funny thing is, looking at a Porsche boxster for the Mrs, it's terrifying the stuff that goes wrong with them, makes the RR a piece of cake to own once you get your head around the weak points..... my 09 diesel Jag is still waiting on a new ecu.... talking of cars which will empty your wallet!