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rallysteve



Member Since: 10 Feb 2014
Location: South Yorks
Posts: 2194

United Kingdom 2002 Defender 110 Td5 DCPU Keswick Green
Injectors
My TD5 once again seems to have air in the fuel system which is making it splutter when starting from cold. Strangely it seemed since i last did the injector seals in March and is only since changing the fuel filter a few weeks ago. No signs of a leak though!

The injector that is in No.3 cylinder has a fault with the rings on the washer sealing face of the injector. Previously the washer has held for 12-18 months before needing replacement. This time is seems to have potentially given up early.

Therefore, i think i need to change the no.3 injector. Am i better to try and source a set of injectors from an unknown donor vehicle so all injectors have done a similar mileage? Can they be refurbished at all?

I know i will need to track someone down with nanocom to reprogram them whether i change one or 5.

Photos of a good injector seal removed (note clear indentation from good injector)


Click image to enlarge


And bad one from faulty injector on cyl.3 (incomplete indentation ring):


Click image to enlarge





Cheers Steve 02' 110 TD5 Double Cab Rebuild Thread
84' 90 3.9 V8 Caged Pickup Build Thread


Mobile Diesel Heater Build Thread
Post #712763 17th Jun 2018 11:06am
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mk1collector



Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

England 2004 Defender 110 Td5 CSW Bonatti Grey
The injectors can be refurbed but I found it cost nearly as much as buying new ones from britcar (which are genuine ones) so I ended up just getting a new set from them. Ray
My build thread
http://www.defender2.net/forum/topic17615.html
Post #712805 17th Jun 2018 3:10pm
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rallysteve



Member Since: 10 Feb 2014
Location: South Yorks
Posts: 2194

United Kingdom 2002 Defender 110 Td5 DCPU Keswick Green
Cheers, so the question really then is: Can i swap out just my one damaged injector and leave the 4 remaining ones in which have done ~125k?

Sadly I cant afford the £1250 for a full new set!

Cheers
Steve 02' 110 TD5 Double Cab Rebuild Thread
84' 90 3.9 V8 Caged Pickup Build Thread


Mobile Diesel Heater Build Thread
Post #713013 18th Jun 2018 3:08pm
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gazman



Member Since: 17 Aug 2015
Location: Liverpool
Posts: 652

United Kingdom 2003 Defender 90 Td5 HT Alpine White
Have you cleaned the injector?? My local garage LR centre told me to clean it with a wire wheel.
I did and it solved mine. Their word were just be careful around the tip but have a good go at the body. Mine was just hard carbon and once cleaned has been as good as new
If your gonna replace it anyway what have you got to loose? 2014 - current ..... 2003 defender td5 90 (my car)
2009 - current .... 2005 zx10r
Post #713035 18th Jun 2018 4:37pm
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rallysteve



Member Since: 10 Feb 2014
Location: South Yorks
Posts: 2194

United Kingdom 2002 Defender 110 Td5 DCPU Keswick Green
Cheers. The issue is with the actual metal around the base of the injector. Normally they have two concentric raised rings which crush into the washer. My faulty one has a large section of the inner ring totally missing and a small fault in the outer ring. Not sure how this has happened but has been like it since the first time i did the seals. Almost looks like porosity in the material although i doubt this would have been missed by Delphi's QA from new.

The mating face of the injector and the recess in the head were spotless when i reinstalled them previously.

Thanks for the suggestion though! Thumbs Up

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


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Post #713039 18th Jun 2018 4:44pm
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derbywill



Member Since: 25 Mar 2010
Location: Derbyshire
Posts: 539

England 2005 Defender 90 Td5 XS CSW Java Black
if you do wire wheel them do not wire wheel the tip as this can damage the holes then it will need new nozzles.

Cheers

Will 2005 90 XS
1954 86'' Series 1 tilt
Post #713156 19th Jun 2018 11:48am
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rallysteve



Member Since: 10 Feb 2014
Location: South Yorks
Posts: 2194

United Kingdom 2002 Defender 110 Td5 DCPU Keswick Green
Any other thoughts on me replacing just 1 injector (thus 4 will have done 125k) before i pull the trigger on a new one?

Thanks in advance,
Steve 02' 110 TD5 Double Cab Rebuild Thread
84' 90 3.9 V8 Caged Pickup Build Thread


Mobile Diesel Heater Build Thread
Post #718059 16th Jul 2018 4:40pm
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