Hiya Guys,

I'm changing the seals (/+washers etc) on the fuel injectors of my 03 auto td5 disco 2. I'm worried about the engine running away when I get everything going again, apparently this can be caused by diesel getting some where it shouldn't? (I'm too stupid to figure out where that is). Please could I ask 4 questions based on this.

1) Where exactly is it that the diesel shouldn't be getting? "The head"? which part of the engine is that? The same 'compartment' that the injector harness is located in? If not where?

2) is this a viable method to prevent the above happening: Disconnect the fuel lines from the fuel pressure regulator before removing Injectors.
If not why not?
If so, how can I be assured that this method has worked? Is there any way to check I've done this correctly? Anything that would indicate I have not?

3) is this a viable method to prevent above: once everything in engine is back together, disconnect fuel pump relay/fuse, then turn the engine over with key. Gently/not for too long. Thereby burning any excess fuel.
If not why not?
If so, how can I be sure I've done it right?

4) are there any other methods for achieving this? Is there anything else I should be aware of?

The area of the engine exposed by removing the rocker cover (IE where the injector harness, etc is). Is covered with oil or diesel. Not sure if that's relevant?/it's supposed to be like that.

If you don't drain it first, it'll all drop into the first cylinder when you remove the first injector.

Disconnecting the fuel lines from the FPR is indeed the way to drain it out of the head - it's even what's in the LR workshop manual. It's worked when fuel stops coming out of the connections on the FPR.

jamesDiscoTD5 said:

If you don't drain it first, it'll all drop into the first cylinder when you remove the first injector.

Disconnecting the fuel lines from the FPR is indeed the way to drain it out of the head - it's even what's in the LR workshop manual. It's worked when fuel stops coming out of the connections on the FPR.

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I did as above. I also put a small pipe into each cylinder through the injector hole and sucked any remaining diesel up the pipe at each TDC. There was a very small amount in each cylinder. And as a double double check I turned the engine over a few times with a spanner on the crank pulley bolt to make sure there was no hydraulic lock when all back together. There wasn’t, how could there be? It all fired up fine after.

The oil under the rocker cover is to lubricate the cams etc. Don’t start the engine with the rocker cover removed or you and your whole world will be covered in oil

jamesDiscoTD5 said:

If you don't drain it first, it'll all drop into the first cylinder when you remove the first injector.

Disconnecting the fuel lines from the FPR is indeed the way to drain it out of the head - it's even what's in the LR workshop manual. It's worked when fuel stops coming out of the connections on the FPR.

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Thanks very much indeed!

PopPops said:

I did as above. I also put a small pipe into each cylinder through the injector hole and sucked any remaining diesel up the pipe at each TDC. There was a very small amount in each cylinder. And as a double double check I turned the engine over a few times with a spanner on the crank pulley bolt to make sure there was no hydraulic lock when all back together. There wasn’t, how could there be? It all fired up fine after.

The oil under the rocker cover is to lubricate the cams etc. Don’t start the engine with the rocker cover removed or you and your whole world will be covered in oil

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Thank you and thank you. Great ideas!

Cheers both!

If you haven’t seen it already, it’s worth looking at this: http://www.discovery2.co.uk/Injector Seals.html

Or this might be helpful.

Ive got the same to do to mine, first step to see if I can solve the smoke issues.... just waiting for the LR seals to arrive.

Which end of Staffs are you Chaz ?

PopPops said:

If you haven’t seen it already, it’s worth looking at this: http://www.discovery2.co.uk/Injector Seals.html

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Anaconda said:

Or this might be helpful.

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He's thanks chaps! Seen them both!! Just being too cautious!

tilly2 said:

Ive got the same to do to mine, first step to see if I can solve the smoke issues.... just waiting for the LR seals to arrive.

Which end of Staffs are you Chaz ?

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Hey good luck mate.

I'm in-between Uttoxexter & Burton what about yourself?

Chazb5046 said:

Hey good luck mate.

I'm in-between Uttoxexter & Burton what about yourself?

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Just out of Stafford....

tilly2 said:

Just out of Stafford....

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AHH not too far

I have a Nanocom if you are ever desperate ...