PDA

View Full Version : TD5 CYLINDER NOT FIRING / INJECTING?



Hay Ewe
21st May 2009, 10:27 AM
Series 2 Disco, TD5 Automatic

Driving home on Sunday after while I felt a vibration, all seemed normal, no lights on, not a noticeable drop in power, speed remained the same. Slowed down in to a town to drop some one off and whilst reversing in to their drive way felt a definite ‘shudder’.

I didn’t say anything so I didn’t alarm my honey but she picked it up. I actually thought it was the auto gearbox. Its due, maybe overdue for an oil change and having one today.

I shut him down and when started up again, all was normal. We dropped some one else off and the next 70km were normal as well. That was Sunday and my honey drive on Monday and Tuesday and didn’t experience it.

Anyway on the way home yesterday, all of 6 KM, just before I got home it started again. I left it idling, pulled the bonnet (that’s what blokes do right!?) but there is nothing to see.

I shut him down, locked him all up then came back a minute or so later and restarted, all was good.

To me it seems like a cylinder is not firing, Diesel burns on compression and the engine is still running so there must not be any fuel getting in to the cylinder.

Its at the stealership now getting the autobox and transfer box oil changed (that’s another story) and I asked them to print me out a list of the faults stored (I know there are some because the chimes go off some times.

When I am cleaning and have the cover off the engine I disconnect the injector loom to check for oil, there was no sign of oil last time I looked, about 8 weeks ago I think.

The battery got replaced last August and we don’t have any extra loads on it, its just a standard disco.

I have done a search and will look at the whole loom again, but if there is no oil at the rocker cover plug one can assume there is no oil anyway where else?

So my questions are :-

Which cylinder?
Is it worth pulling the rocker cover and looking at the loom inside?
If I do identify the cylinder and install a replacement injector, is it plug and play or does it need test book? (It think it needs test book or similar)
Will the diagnostic report show up a faulty injector?
Will running some injector cleaner through it be worth while?
What sort of / brand injector cleaner?
What are my other options?

Have I got this right or am I barking up the wrong tree?

Thanks in advance for your help

Hay Ewe

Graeme
21st May 2009, 04:25 PM
There's been a couple of instances where there was a broken wire at an injector connector, which was fixed by re-soldering the broken wire. A fault should have been logged for the particular injector if this has happened.

LandyAndy
21st May 2009, 10:07 PM
Pull the ECU out(next to the battery)
Is it leaking oil from the RED plug???
If so do a search on "Oil in the loom"
It causes LOTS of silly issues!!!!
Andrew

Hay Ewe
28th May 2009, 08:13 AM
I checked the red plug connecting to the engine ECU and the plug coming from the cam shaft cover, both had oil, quite a lot in my opinion.

I am sure that when I last looked at the small plug there was no oil on it and it wasnt too long ago, 2 months?

so thanks for the replies, I shall investigate the oil in loom thing etc

at least at the moment I am not worried about the injectors them selves!

Hay Ewe

Hay Ewe
28th May 2009, 05:57 PM
will be looking at changing the loom soon
always like to get as much information as I can so have been looking around for how to ot tutorials on changing the injector loom / injector harness

is there one?
can you link it for me?

thanks in advance

Hay Ewe

Hay Ewe
28th May 2009, 06:06 PM
Its OK, found this one
reading it through looks good
can I post this link with problems?

www.discovery2.co.uk / Workshop /Injector Harness (http://www.discovery2.co.uk/Injector_harness.html)

Hay Ewe

Pedro_The_Swift
28th May 2009, 06:19 PM
oh look,,

The Good Oil strikes again,,,

http://www.aulro.com/afvb/good-oil/34318-td5-engines-head-studs-loom-head-removal-etc.html

Hay Ewe
29th May 2009, 08:17 AM
thanks Pedro
I looked there but my intrepretation was for more for diagnosis, not a step by step with pictures

thanks for your help in compiling the Good Oil though, I did read it and gained more knowledge

Hay Ewe

LandyAndy
30th May 2009, 12:16 AM
Ewe should only need to replace the harness that is inside the rocker cover(around $200 EASY DIY JOB).Its possible to flush the oil from the rest of the loom with time and metho spirits saving THOUSANDS of $$$$$
Goodluck;););)
Andrew

Hay Ewe
5th June 2009, 10:01 AM
Hay, changed out the harness this morning before work, all good so far
I realised the actual problme, the plug is the worng way around, if the female part was coming out of the cover, the oil may by pass the o-rings but then it woudl drip to the atmosphere instead of in to the plug and loom, never mind

all is good

Hay Ewe

Hay Ewe
9th June 2009, 09:50 AM
I did that on friday morning and have been doign a lot of stop start driving over th weekend supporting a bicycle ride. All was good, seems cured

I am a bit down on my self though, I spent $127 for a new loom when two new o-rings would probably have fixed teh problem for less than $5, jsut need to get the rigth type for the temperature

More reserach next time!

oh well, maybe some body else that encounters the problem will be able to save some $$$

Hay Ewe