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chrispaylin93

Member Since: 13 May 2017
Location: Gloucestershire
Posts: 14

2005 Defender 110 Td5 XS DCPU Santorini Black

Severe Water issues

Hello hello 👋🏽

I am I’m need of some help, I have a 1999 TD5, which clearly doesn’t like water!

Seems to be ok on tick over or very low power, as soon as there is any load on the engine it seems to throw the water out of the header tank, it appears to come out the tank anyway as it always soaks the bulk head, I have changed the cap, changed the rad, changed the water pump and the thermostat! None of which made any difference!

The temp gauge will usally go right up to hot and then come back down while driving! Am I looking at a head issue?

Any help be very much appreciated, Thankyou

30th Nov 2021 8:47am

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5729

2006 Defender 110 Td5 USW Zermatt Silver

I think there is a good chance you are having cylinder head issues. I’m trying to remember when they stopped using plastic locating dowls.

30th Nov 2021 9:03am

donmacn

Member Since: 06 Nov 2017
Location: Nth Scotland
Posts: 1845

I think a blown cylinder head gasket might be possible - so that pressure from the engine/pistons is getting into the coolant system and over-pressurising it.

The ‘hot then cold’ thing - I’m not sure if the Td5 is the same, but with the Tdi, if you lose enough coolant there can be an air bubble around the sensor. This means it reads cold - the opposite of what the engine is.

A pressure test might be an idea. Donald

1994 Defender 300Tdi 110 SW - owned since 2002 - 230k miles and going strong
(The 'rolling restoration' or tinkering thread: http://www.defender2.net/forum/topic58538.html )
2000 Range Rover P38 4.0L V8

in the past..
RR classic - fitted with 200Tdi
1984 RR classic - V8 with ZF auto box
1993 Discovery 300Tdi

not to mention the minis and the Type 2 VW camper...

30th Nov 2021 9:08am

rallysteve

Member Since: 10 Feb 2014
Location: Cumbria
Posts: 2237

2002 Defender 110 Td5 DCPU Keswick Green

Yours will certainly have plastic dowels. Most places you read say that they stopped using plastic dowels when the 15P engine came in with the 02' face-lift. My 02 15p had (broken) plastic dowels still though. 02' 110 TD5 Double Cab Rebuild Thread

30th Nov 2021 9:30am

4RF RDS

Member Since: 19 Jul 2015
Location: Ottawa
Posts: 941

2000 Defender 110 Td5 XS CSW Epsom Green

Yup 1999 has plastic dowels unless they were already changed. I believe the change over to metal dowels was sometime in 2002. Regardless, sadly, sounds as though you have a blown head gasket. Stop driving it and get to work.

Good luck. 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam)
2000 Defender 110 CSW TD5 (CTX)
1992 Range Rover Classic (Lizzy)
1972 Series III 300 Tdi (Stanwood)
1967 MGB GT

Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats.
H. L. Mencken (1880 - 1956)

30th Nov 2021 4:32pm

A.Rubio

Member Since: 04 Mar 2017
Location: Rocafort -Valencia
Posts: 31

Hello, good night, the 10 P motor sure, no, it sure has plastic centering pins, but there is also another problem and that is that the thickness between the water chamber and the valve seats of the cylinder head is ridiculous, with this I do not want to say that all the cylinder heads go through that place, but 80% of them the water comes out there and in the cylinder nº1; do not think about putting a cylinder head manufactured by the original Land Rover supplier, if you have to put a new one that is AMC. I had to do 4,500 km from the desert to home, spending 1 liter of water every 250 km. That is, with the expansion tank cap open a little so that it could breathe and not burst a hose.

30th Nov 2021 8:20pm

diesel_jim

Member Since: 13 Oct 2008
Location: hiding
Posts: 6095

Definately head problems, either gasket or more than likely a crack in the head.

I had a 10P engine I'd built up from bits and it did exactly the same thing... was fine if I drove it gently, as soon as I gave it the beans a poo'y brown sludge came out of the header tank (emulsified oil)
and the heater always blew cold. eventhough the temp guage showed OK.

I tried getting it skimmed but you could see the crack in the face of it. got a replacement head for a couple of hundred quid (second hand) and it sorted it.

I put some washing powder in the coolant and ran it for a while and kept flushing it through (with more washing powder) and cleaned the old oil out of it.

30th Nov 2021 10:00pm

Leamreject

Member Since: 19 Dec 2020
Location: Middle Earth - Leamington Spa
Posts: 970

Check to see if you have oil in the coolant or coolant in the oil. Either is a sign of head or gasket problems. Ride like you stole it!!
If I’m not on a bike it’s because only a 4x4 will do…
2011 2.4 Puma 90 HT

1st Dec 2021 3:16am

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