Head scratcher

[Mud-muncher1]

Hi all, i have a problem still with over heating, the engine seems to be over pressurising, I've done all the usual thing i:e gaskets, pipes, rad, pump, flushed etc, I've even changed the expansion tank cap just incase but still no joy, does anyone have any other idea's it could be.


Thx Jav.

[peasey]

Mate i sympathise with you,i had this on my r5gt and it turned out to be a cracked head opening up when hot and under load,you dont say which engine you have so i cant really give you any more info,sorry.

[Chris Putt]

can the thermostat not opening/closing correctly lead to pressurisation?

[Mud-muncher1]

Mate i sympathise with you,i had this on my r5gt and it turned out to be a cracked head opening up when hot and under load,you dont say which engine you have so i cant really give you any more info,sorry.

Its a 300tdi

can the thermostat not opening/closing correctly lead to pressurisation?

The thermastat is working fine

Thx Jav.

[boss]

gremlins?

[Mud-muncher1]

Probably, who knows this is been going on since manby so i think its some thing in the air up there ( too clean i think  )


Jav.

[beast5680]

when does it overheat? when its working hard or all the time? have you messed with the fuelling? is the rad definatly clean not just the centre but all the way across the width of the rad?

[Mud-muncher1]

all the time when driven, the rad if fine as its been flushed that many time i can't remember and apart from a few fins gone its in good condition as it was new only a few months ago

[4 landies]

When  you say gaskets which do you mean?

[Mud-muncher1]

All new gaskets from the head onwards in the system,


Jav.

[Range Rover Blues]

If it's presurisig that bad then it's a head gasket or cracked head surely.  Did you buy a branded gasket? I learned the hard way there are a lot of s*** ones about.

[Mud-muncher1]

All the gaskets come from paddocks

[Frankie-Boy]

It might well be the cylinder head, a friend of mine had the same trouble with his 300 after he had a head gasket blow, it had the head skimmed and gasket replaced but he still had problems with overheating, it was eventually diagnosed as the head going soft and not seating properly, after fitting a new head everything is fine now.

[GreedyGibson]

its worth getting  the head crack and pressure tested and skimmed when they are off cost's about £60 around here but saves having to do it twice.

[Mud-muncher1]

Hi all, thanks for all your help and info and i have now found the problem, it seems that the head gasket has gone again due to the head being warped, so hopefully back on the road very soon,


Thanks Jav.

[diggerdog36]

Mate i sympathise with you,i had this on my r5gt and it turned out to be a cracked head

I had exactly the same problem on the same motor, a R5 GTT, didnt find the problem until I checked it with penetrant flaw detector.

[Mr Alford]

Hi all, i have a problem still with over heating, the engine seems to be over pressurising, I've done all the usual thing i:e gaskets, pipes, rad, pump, flushed etc, I've even changed the expansion tank cap just incase but still no joy, does anyone have any other idea's it could be.


Thx Jav.

u could always try putting 2 head gaskets on when i do it again lower the compression!

[bilge rat]

dont know what type of h/ gasket you used but l/r now supply them multi layer gaskets . aparently supperseded the older elring type .  personally i try and find these .think the elring ones are better . i wouldnt use the newer one . infact think theres one in me garage somwhere i ordered and when it come didnt use it .. would definatly get a straight edge across it and see iff its warped . and because you have had trouble for a while with it . it may be worth as already said get it tested . . good luck with it . alan...

[Mr Alford]

dont know what type of h/ gasket you used but l/r now supply them multi layer gaskets . aparently supperseded the older elring type .  personally i try and find these .think the elring ones are better . i wouldnt use the newer one . infact think theres one in me garage somwhere i ordered and when it come didnt use it .. would definatly get a straight edge across it and see iff its warped . and because you have had trouble for a while with it . it may be worth as already said get it tested . . good luck with it . alan...

probably try either www.mailorder4x4.com or www.brookwells.co.uk

[Mud-muncher1]

Well I've got another head now so just a small bit of work i should have it all back together, the H gaskets i use are the 3 hole gasket which is the largest of the ones you can get


Jav.

[Range Rover Blues]

I think I bought mine form Paddocks too   after I had trouble a couple of folks on here said make sure you buy the geniune OEM supplier ones.

Also, the 300TDi head shouldn't be skimmed, apparently, fortunately they are only £300, not like the 200 TDi.

That said, I skimmed ours.  Just need to find out whether it's the exhaust manifold on head gasket that's making the ticking sound :? 'm hoping it's just the exhaust as someone ran into the back of it, otherwise I'm in the same boat as you.

[Mud-muncher1]

Mine seemed to be fine when it was skimmed first time round, but thats the first time i've heard that you shouldn't skim 300 heads. Last time it failed between 3rd an 4th cylinder, but this time it went near the 2nd from the manifold gasket side so it could be down to where the head had warped


Jav.

[stuntman]

I've skimmed 3 300 cylinder heads, all in the space of 4 weeks, for different people, no probs just lots of agro.

Mind you I did get really quick at doing the job :)