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stigomery



Member Since: 10 May 2016
Location: Cambridge
Posts: 277
United Kingdom 2004 Defender 90 Td5 HT Belize Green
Injector seals - engine damage?
Morning...

Having driven the 350 mile trip home to my folks the td5 has developed problems starting, all the signs seem to point to a leaking injector seal:

- takes a long time to fire & start, pumping the pedal eventually gets it going
- initially sounds like it's firing on 4 or less cylinders
- when warm it starts and runs fine
- no loss in power once warm
- Hawkeye not throwing up any relevant error codes
- all glow plugs and injectors seem to be operating/firing as they should
- no loss in coolant
- the head was done a year ago so whilst I 'think' the symptoms point to seals, they should be fine as they were replaced when the head was done AFAIK

If you think I've incorrectly diagnosed please advise.

So, my question is, am I going do damage if I now drive the 350 mile trip home towing a 600+kg tailer? Or I should I urgently be trying to find someone to do the seals tomorrow before I set off?

Thanks,

Stig

Last edited by stigomery on 15th Aug 2019 9:12am. Edited 3 times in total
Post #786908 15th Aug 2019 8:43am
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stigomery



Member Since: 10 May 2016
Location: Cambridge
Posts: 277
United Kingdom 2004 Defender 90 Td5 HT Belize Green
As an update, rather than try to start this morning I first purged the fuel system... it started first turn of the key instantly like it normally does... and appeared to be running on all 5 cylinders...

Does this still point to leaky injector seal(s)?

Faulty fuel return valve?

Thanks,

Stig
Post #786911 15th Aug 2019 8:57am
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554
fuel filter head in good order Question

https://www.lrworkshop.com/diagrams/land-r...tors_53509
Post #786913 15th Aug 2019 9:09am
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stigomery



Member Since: 10 May 2016
Location: Cambridge
Posts: 277
United Kingdom 2004 Defender 90 Td5 HT Belize Green

Click image to enlarge

Seems to be...

Also, video of her starting today after I purged the fuel system... https://youtu.be/yNTsIqKyrIo
Post #786915 15th Aug 2019 9:21am
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stigomery



Member Since: 10 May 2016
Location: Cambridge
Posts: 277
United Kingdom 2004 Defender 90 Td5 HT Belize Green
dorsetsmith wrote:
fuel filter head in good order Question


But could be the return valve... I'm reluctant to start taking things apart while 350 miles and a ferry journey away from home....
Post #786916 15th Aug 2019 9:23am
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Click image to enlarge
when your removing fuel lines adaptor to replace none return valve you find out how good filter head is brass and aluminium , copper and steel good recipe for corrosion

Click image to enlarge
Post #786926 15th Aug 2019 10:08am
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rallysteve



Member Since: 10 Feb 2014
Location: Cumbria
Posts: 2198
United Kingdom 2002 Defender 110 Td5 DCPU Keswick Green
99.9% certain it will be the injector seals. Has your oil level gone up or does the oil smell strongly of diesel. If not I dont see an issue with driving 350miles.

When the leak is still minor you will get combustion gasses into the diesel rather than diesel into the oil. The worst that happens with combustion gas into the diesel is you will start getting debris in the fuel return system.

I have driven my Td5 for many miles with the injector seals gone. Mine goes fairly frequently (every 12-18months) on one cylinder due to an issue with one of the injectors.

Steve 02' 110 TD5 Double Cab Rebuild Thread
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Post #786937 15th Aug 2019 11:34am
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stigomery



Member Since: 10 May 2016
Location: Cambridge
Posts: 277
United Kingdom 2004 Defender 90 Td5 HT Belize Green
Bizarrely the last few mornings it's back to normal, no problem starting... is this normally an intermittent problem at first?
Post #787323 17th Aug 2019 10:42am
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Tommo



Member Since: 19 Dec 2013
Location: Leicestershire
Posts: 830
United Kingdom 2006 Defender 90 Td5 Black LE Java Black
When mine had same symptoms it was the injector seals. My advice is go genuine!!
Post #787333 17th Aug 2019 12:22pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5417
2006 Defender 110 Td5 USW Zermatt Silver
stigomery wrote:
Bizarrely the last few mornings it's back to normal, no problem starting... is this normally an intermittent problem at first?


No. Not in my experience. Once it starts to be a problem it only gets worse. That is with same scenario, so every morning for example. Obviously the longer you leave it for the harder it is to start, without priming system first. I would be surprised if they have failed so soon, unless done wrongly, which I find hard to believe on a new head.
Post #787334 17th Aug 2019 12:30pm
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stigomery



Member Since: 10 May 2016
Location: Cambridge
Posts: 277
United Kingdom 2004 Defender 90 Td5 HT Belize Green
Is misfiring a sign of bad seals?

I noticed last night after my lift home that she is firing on less than 5 cylinders... wondering if this is related or a sign of a different problem...

Thanks
Post #787589 19th Aug 2019 10:55am
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rallysteve



Member Since: 10 Feb 2014
Location: Cumbria
Posts: 2198
United Kingdom 2002 Defender 110 Td5 DCPU Keswick Green
No, possibly oil in the red ECU plug.

Steve 02' 110 TD5 Double Cab Rebuild Thread
84' 90 3.9 V8 Caged Pickup Build Thread - Now For Sale


Mobile Diesel Heater Build Thread
Post #787592 19th Aug 2019 11:07am
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5417
2006 Defender 110 Td5 USW Zermatt Silver
Injector seals is normally bad starting only. Not misfire once started and running.
Post #787607 19th Aug 2019 12:31pm
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stigomery



Member Since: 10 May 2016
Location: Cambridge
Posts: 277
United Kingdom 2004 Defender 90 Td5 HT Belize Green
Thanks chaps... I'll start with the ECU loom and work from there...
Post #787616 19th Aug 2019 1:09pm
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