Vehicle & Technical > Discovery

300TDI Problems

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D6JAY:
Thanks for the swift replies.

My initial thought was head gasket or cracked head but the little check i did didn't show it, putting a rubber glove over the expansion tank hole and sealing with an elastic band, running the engine if it were the gasket or head it would be pressurising the water system and would blow the glove up??
I haven't noticed any water coming out of pipes or leaks, only water leaking out seems to be out of the expansion bottle.

Chris (Hi :wink:) the water pump was replaced around 9 months ago when the guy replaced the head gasket.  Is there any way that the pump operation can be checked?
No i don't have any steam from the exhaust either

I checked the stat operation this evening and its working how it should.

The thing I'm still finding strange is the fact that the water pipes to and from the rad were hot but the water in the expansion tank was luke warm?!  This changed yesterday when i did finally over heat and the water in the tank was piping hot!

 :roll:

les baty:
hi mate you are having exactly the same problems as i had with a 300tdi, i would bet my last quid on the head being cracked. mine would run like a swiss watch without the thermostat in but as soon as i replaced it , it started dumping the water out the bottle, i also found that with the heater pipes one was hot and one was cold which left me scratching my head. it turned out that the crack in the head was only opening up when the engine had reached normal temp, hense it was running ok without the thermostat . have you got the right head gasket??? you need to measure the pistons and get a gasket to suit, also i wouldnt fit a cheap water pump, im sorry its not good news but its not the end of the world either, good luck with it

bogie:
If you have overheated it like you said,it will be at least the head gasket gone because the heads bend like bananas,should know done anoth of them. Just spend £5 having it sniffed and at least it will put you in some direction and a little piece of mind about your head. It takes 5 minutes.

D6JAY:

--- Quote from: les baty on October 06, 2009, 19:58:11 ---hi mate you are having exactly the same problems as i had with a 300tdi, i would bet my last quid on the head being cracked. mine would run like a swiss watch without the thermostat in but as soon as i replaced it , it started dumping the water out the bottle, i also found that with the heater pipes one was hot and one was cold which left me scratching my head. it turned out that the crack in the head was only opening up when the engine had reached normal temp, hense it was running ok without the thermostat . have you got the right head gasket??? you need to measure the pistons and get a gasket to suit, also i wouldnt fit a cheap water pump, im sorry its not good news but its not the end of the world either, good luck with it

--- End quote ---

Hmm, thats not what i wanted to hear :(

The head gasket thats on is the 3 hole so im assuming that this would be the correct one. 

I could understand if it were getting up to temp then doing it but i have travelled for 300 miles up to temp and its not done it?!

Im going to get it pressure tested tonight, this should give me the outcome  :)

Thanks for all your help :D

les baty:

--- Quote from: bogie on October 06, 2009, 20:31:24 ---If you have overheated it like you said,it will be at least the head gasket gone because the heads bend like bananas,should know done anoth of them. Just spend £5 having it sniffed and at least it will put you in some direction and a little piece of mind about your head. It takes 5 minutes.

--- End quote ---


i had mine sniffed and it showed nothing, how good are these tests???

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