 | Home > Technical > TD5 Injector Life Span |
 
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410  
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Curious really, but perhaps one of you good gents have a better idea of this than I do.
How long do TD5 injectors last? There is no service schedule as far as I know, but do they wear? Should they be serviced at some point in their life? How do you tell if the injectors are no longer working at their best? As some of you may know Miffy is no spring chicken  She has covered nearly 125k miles on her original injectors. Hence the thought process above...
There is nothing in particular that I am concerned about, they are noisier than they used to be for sure, but working and obviously I have no idea about their spray pattern. Could be dribbling in to the cylinders like a toothless hound... |
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24th Dec 2021 11:06am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5874 
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Mine have been removed at least twice , once for a new head and once when I had the seals replaced.
So far I am on 234k and like Blackwolf seems to run fine. A bit of smoke when I boot it - but probably down to the turbo ? 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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24th Dec 2021 11:47am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Balls, I was obviously on the Christmas spirits a little early this morning. Miffy is close to 225k miles not 125k miles.
Good grief, pass the gin... |
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24th Dec 2021 1:29pm |
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| BaronDefenders Member Since: 28 Jun 2019 Location: London/Cotswolds Posts: 903 
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My Td5 is on 162k and I have no plans to refurbish the injectors. I run premium diesel through it, in the vague hope of keeping the pump, lines, and injectors clean. Charlie
1949 Series 1 80 (SOLD) 2002 Td5 90 (SOLD) 2008 Freelander 2 (SOLD) 1958 Series 2 88 Pastel Green (2019 LR Legends Best Restored) 1983 V8 110 Limestone (Previously owned by Tom Sheppard MBE) 2004 Td5 90 Santorini Black (Td5INSIDE Powered & Rebuilt by CSK) 2012 Puma 110 Zermatt Silver (Overlanding Build) Instagram: @BaronDefenders |
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24th Dec 2021 2:41pm |
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| barbel jim Member Since: 12 Dec 2012 Location: Northants Posts: 1432 
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192k still original.
They can become a bit slack overtime. Excess smoke is one of the symptoms. But probably only one. Not shutting correctly so the fuel timing is slightly out. They do wear. I’m a convert to millers eco max. |
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24th Dec 2021 8:46pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Yes it is the "slackness" that I am pondering about, it would certainly account for the more clackerty sound of the injectors over the last 100k miles. As you have all said they are still working and there is nothing that I am desperately worried about. Curious is all.
Could they be running better? Probably. I have been tempted with a second set out of a breaker with less miles on them, but that'd be rolling the dice on someone else's maintenance acumen
It could be a matter of age but the MPG has dropped a bit in those last 100k miles, but not dramatically. She has a tune, but just a mild one. She does push out a little smoke, but nothing drastic. At the end of the day I like to have a solid well running engine and I do not mind tweaking things to keep the old girl running as well as she can do. Anyway, these engines are not getting any younger and I am not in a rush to find an engine to swap in anytime soon |
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25th Dec 2021 12:26pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Actually I do have a related question....
I remember there being a service memo regarding the setting up of injector adjustment. Something like the book says 1 turn, but the recommendation was 1.5 turns. Does anyone know why this was? |
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25th Dec 2021 12:34pm |
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| htb2 Member Since: 02 Nov 2018 Location: Carmarthenshire Posts: 535 
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IIRC It was increased to reduce chances of them being too tight, therefore rocking injector and cracking the internal diesel gallery that injectors sit through, or so the guy on Ebay who welds cracked ones up says.
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25th Dec 2021 8:10pm |
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| barbel jim Member Since: 12 Dec 2012 Location: Northants Posts: 1432
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I certainly wouldn’t be putting in second hand unless a total emergency!! Your not going to see any real benefit. I’d be saving for a new set  roughly a couple of grand plus coding . Or you could buy a 2nd hand engine and totally rebuild it over time…… something I’ve thought about but not acted on yet |
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26th Dec 2021 9:04am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Ah yes that is the plan Barbel
Apart from anything else it would be a fun thing to do, but only with a decent sized garage |
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26th Dec 2021 10:04am |
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