Disco cooling problem

Anyone know the answer to this puzzle ?

My Td5 boils over and loses a small amount of fluid after any reasonable run
when it get up to temp.
..
It doesn't overheat during the trip regardless of speed, length, gradients
etc. The needle stays smack in the middle.

There is no other leak on the system.

Intersting eh ? Tee's me off though !

so Scothern was, like...
> Anyone know the answer to this puzzle ?
>
> My Td5 boils over and loses a small amount of fluid after any
> reasonable run when it get up to temp.
> .
> It doesn't overheat during the trip regardless of speed, length,
> gradients etc. The needle stays smack in the middle.
>
> There is no other leak on the system.
>
> Intersting eh ? Tee's me off though !

Are you overfilling it? If there are no leaks then possibly it is just
dumping any excess and will stay at that level from there on, provided you
don't go filling it up again.

IIRC, the Td5 doesn't need much in the overflow tank - just enough to cover
the inlet pipe to prevent it syphoning air back in when it cools down.
Always check the level when it's cold.

Try *not* topping it up next time and just keep an eye on the level.

OTOH, if it's *really* boiling, then you do have a problem.


--
Rich
==============================
Disco 300 Tdi auto
S2a 88" SW
Tiggrr (V8 trialler)

Are you sure it is coolant?
Do you have air con, because this dumps extracted moisture which can look
like a coolant leak after a run?
Just a thought.

Martin
04 Disco TD5
88 RRC 3.5 EFI
86 RRC 3.5 EFI
68 NGTC V8

"Scothern" <[email protected]> wrote in message
news:[email protected]...
> Anyone know the answer to this puzzle ?
>
> My Td5 boils over and loses a small amount of fluid after any reasonable
run
> when it get up to temp.
> .
> It doesn't overheat during the trip regardless of speed, length,
gradients
> etc. The needle stays smack in the middle.
>
> There is no other leak on the system.
>
> Intersting eh ? Tee's me off though !
>
>
>
>

"Martin Coombs" <[email protected]> wrote in message
news:[email protected]...
> Are you sure it is coolant?
> Do you have air con, because this dumps extracted moisture which can look
> like a coolant leak after a run?
> Just a thought.
>
> Martin
> 04 Disco TD5
> 88 RRC 3.5 EFI
> 86 RRC 3.5 EFI
> 68 NGTC V8
>
> "Scothern" <[email protected]> wrote in message
> news:[email protected]...
>> Anyone know the answer to this puzzle ?
>>
>> My Td5 boils over and loses a small amount of fluid after any reasonable
> run
>> when it get up to temp.
>> .
>> It doesn't overheat during the trip regardless of speed, length,
> gradients
>> etc. The needle stays smack in the middle.
>>
>> There is no other leak on the system.
>>
>> Intersting eh ? Tee's me off though !
>>
>>
A previous 300TDi of mine did this when you slowed right down, turned out to
be the head gasket!!!

Peter.