Td5 Disco Auto, Diesel in sump?

=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

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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.

So i should get the seals replaced first?

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

Muppetdaze said:

So i should get the seals replaced first?

Click to expand...

I would.

Copper washers and O-rings as Neilly says, washer sits at the base sealing the injector into the combustion chamber and the O ring seals the injector to the fuel gallery (using the copper washer as the bottom seal for the fuel gallery too). The whole base of the injector sits in diesel.

http://www.discovery2.co.uk/Injector Seals.html

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?

Muppetdaze said:

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?

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Not sure, did you read the replies above??

Cheers

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?)

Perhaps you need to ask your garage what they meant by injectors.

Cheers

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

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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

Couldn't diesel get into the sump if the piston rings were knackered?

Col

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

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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.

Just have a look at this @Muppetdaze. Sounds like your problem and tells you how to do the job...
http://www.discovery2.co.uk/Injector Seals.html

davidsmith1307 said:

Just have a look at this @Muppetdaze. Sounds like your problem and tells you how to do the job...
http://www.discovery2.co.uk/Injector Seals.html

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Same as post #5 then...LOL

Cheers

neilly said:

Same as post #5 then...LOL

Cheers

Click to expand...

Short attention span + wrong glasses

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.

Okay, printed out that Disco2 guide, Thanks again