Td5 Disco Auto, Diesel in sump?

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Muppetdaze

Muppetdaze

Active Member
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Location
Thanet
=Hi all, I just got hold of my new toy, and it won't rev past 2,500, confident that the cause has been on the forums loads of times I went ahead and bought it, 700 quid, 116k over 3k spent n it the last 5 years, Auto, 7 seater, So i took it to my trusted local garage to have a look at it

Now they tell me there's diesel in the sump and it is most likely the injectors. is this the only cause?

Anyone know where i can find some 'cheap'

If i thought the previous owner knew about this i'd be having words, he just told me about the thing not revving and has had the ecu done , the injector harness replaced, the MAF and EGR sensor replaced
 
Muppetdaze said:
=Hi all, I just got hold of my new toy, and it won't rev past 2,500, confident that the cause has been on the forums loads of times I went ahead and bought it, 700 quid, 116k over 3k spent n it the last 5 years, Auto, 7 seater, So i took it to my trusted local garage to have a look at it

Now they tell me there's diesel in the sump and it is most likely the injectors. is this the only cause?

Anyone know where i can find some 'cheap'

If i thought the previous owner knew about this i'd be having words, he just told me about the thing not revving and has had the ecu done , the injector harness replaced, the MAF and EGR sensor replaced
Click to expand...

It is not actually the injectors that are the issue, it's diesel leaking past the seals into the oil, it could also be a cracked fuel gallery.
 
Injector washers and seals , ( only fit genuine ones, cheap ones fail too quickly from what I understand ). Cost approx £35 for all five injectors total, then allow a couple of hours to fit, if doing yourself and taking your time.

A cracked head is obviously a different matter, by which I mean it requires further investigation and cost is going to be a lot more, however there was a guy on fleabay who did weld the heads if they had cracked at a common place which was iirc injector no1.


Cheers
 
Last edited:
So does this mean it's unlikely to be injectors? or is there any other way other than cracked block to get diesel in the sump?
 
yes I read them, i just didn't think my local garage would say it was the injectors if it weren't, so to avoid other potentially expensive problems, i just wanted to know how many ways Diesel could get into the sump, ( and I know Halfords changed the oil 5k miles ago but surely even they couldn't get it that wrong?)
 
The most common for diesel in oil are the injector o-rings which can be "tenderised" in time by high engine temperatures especially on vehicles with bigger than standard tyres or which are used much for towing without having an additional coolant temp display to see the real engine temp as many drivers are relying on the factory gauge which stays at the middle up to 120*C and above 110 the orings will suffer on a long run... the worst scenario remains a crack in the head....replace the o-rings (and copper washers) then watch the oil level maybe you are lucky
 
Cheers guys, that makes me feel a lttle more hopeful, they meant injectors, five of them at 200 quid each, hence my panic. wil go talk with them in the morning
 
The more you read about the problem of diesel in the sump, the more you'll come to realise that the problem is very rarely if ever the injectors themselves.
Yes, you could be very unlucky and find that you have a crack in the cylinder head allowing diesel to find its way into the sump from the fuel rail, but, as the others have said it's more likely to require the seals on the injectors, both the o-rings and the copper washers.
 
Muppetdaze said:
Cheers guys, that makes me feel a lttle more hopeful, they meant injectors, five of them at 200 quid each, hence my panic. wil go talk with them in the morning
Click to expand...
If you watch the pic which is a head's cross-section you'll see that the only way where fuel can get into the oil(other than a crack in the head) is if it passes near the o-rings

Td5_Cylinder head_washers.jpg
 
Muppetdaze said:
Cheers guys, that makes me feel a little more hopeful, they meant injectors, five of them at 200 quid each, hence my panic. wil go talk with them in the morning
Click to expand...
Never, ever, ever believe anything any garage says!
Start with that view.
If they can prove you wrong by being:honest, professional, reasonable, then all the better.
 
The standard Land Rover heads also crack in the pocket where the injector sits at 90 degrees to the injector o ring, I saw on here somewhere when someone took off the rocker box cover then turned on the ignition and he could see the diesel oozing out of the crack.
My own engine had a new head fitted before I bought it but its an aftermarket one re designed to have thicker walls in the injector pockets.
 
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