Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10673
  
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BTTT. Gonna be freezing soon.
Note to new disco owners.
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 4th Nov 2021 9:34 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10673
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Glowplugs on these can snap on removal.
Professionals can remove them, but you don’t get much change from £700
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| 4th Nov 2021 9:54 pm |
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Breg90
Member Since: 04 Feb 2017
Location: Falkirk
Posts: 360
 
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Maybe glow plugs snap...
But the engine uses the glow plugs to ensure full combustion of the diesel at start and into warm up. So starting the engine with out working glow plugs (when they are needed) will cause incomplete combustion, i.e. diesel condensing on cylinder walls, migration into the oil and excess oil dilution. Excess oil dilution with diesel drops the oil viscosity and will, in my opinion, contribute to main and big end bearing wear.
To me your risking a potential contributor to bearing wear and crank failure by 'fooling' the system to get it to start.
Change the glow plugs unless your D3 is a scrapper/you are knowingly running it into the ground. Series one 1949 - in bits, chassis is strapped to the ceiling in my garage (beside the canoe)
LR 90 - In bits
Disco 3 - currently in bits
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| 4th Nov 2021 10:11 pm |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10673
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You may well have a point.
But cranking and cranking a non starting engine will also Lead to too much unburt fuel being injected.
The wrong mixture is only used for a few seconds to get it going.
Yes absolutely intended for the low value cars out there.
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| 4th Nov 2021 10:17 pm |
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Devon Z
Member Since: 14 Nov 2019
Location: Brixham Devon
Posts: 251
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Living in the warmer climate of the coast of South Devon I only had this problem four times last winter during a week of low temperatures of 1 degree overnight. Just looked at a video on YouTube of a guy removing seized glow plugs on a tdv6 and it’s not a job I fancy.
I’ll be trying the resistor mod just in case this winter 😀 Steve
*2005 RR Sport 2.7tdv6 HSE. Current project.
*98 Volvo V70R FWD, owned 14 years, future project.
*99 BMW Z3 30k miles owned from new.
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| 6th Nov 2021 4:50 am |
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aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2463
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I would suggest you get the glow plugs replaced, you can feel when they are about to snap
The ones that i have had problems with have loosened off but then went tight due to carbon build up on the tips, if you cant get them out using gentle force tighten them back up and leave that one.
You may find you can get four or five out which will make a big difference to the starting. A couple of the plugs are a real pain to get to and i have seen just the other four changed on a couple of engines and they were done by Land Rover dealerships.
I have changed a number of glow plugs on these engines without issues but i have also had some that have snapped.
The last ones i did were on my own vehicle and i used a good quality injector cleaner for a month before removing them in hope it would remove the carbon, all six came out but i would need to repeat this a number of times on other engines to be sure it made a difference. Andrew
D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE
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| 6th Nov 2021 8:11 am |
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Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10673
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Yeah using high quality fuel Or cleaner the month before is good to remove carbon.
But if I lived somewhere where is only fit to 1C, I wouldn’t be going near them! 8)
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| 6th Nov 2021 8:19 am |
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Flapper
Member Since: 04 Feb 2015
Location: Gloucester
Posts: 352
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Hi all
I have had this mod fitted for 3+ years I use it only when required, which is about 10 times a year. It cost less than a fiver to do. My car is a 2005 with117000 on it.
It's a cheap fix that gets it started, I may get the plugs done but I'm in no rush.
It just works and you don't need to be a electrician to do it.
Kit required
Wire 3 metres
Soldering iron or chopblock or crimps
2000ohm resistor or 3000ohm but not more than 5000ohm
A button or switch.
That's it see above photos and diagrams it really is simple to do and so far works down to -3
You can even just unplug the sensor and just put the resistor in the end of the plug .it's just a simple solution adapted from poring boiling water on the same sensor.
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| 6th Nov 2021 9:05 am |
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Devon Z
Member Since: 14 Nov 2019
Location: Brixham Devon
Posts: 251
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aja4x4 wrote:I would suggest you get the glow plugs replaced, you can feel when they are about to snap
The ones that i have had problems with have loosened off but then went tight due to carbon build up on the tips, if you cant get them out using gentle force tighten them back up and leave that one.
You may find you can get four or five out which will make a big difference to the starting. A couple of the plugs are a real pain to get to and i have seen just the other four changed on a couple of engines and they were done by Land Rover dealerships.
I have changed a number of glow plugs on these engines without issues but i have also had some that have snapped.
The last ones i did were on my own vehicle and i used a good quality injector cleaner for a month before removing them in hope it would remove the carbon, all six came out but i would need to repeat this a number of times on other engines to be sure it made a difference.
It’s good to know they can come out sometimes, I’ve been using Millar’s EcoMax for the last twelve months anyway. Steve
*2005 RR Sport 2.7tdv6 HSE. Current project.
*98 Volvo V70R FWD, owned 14 years, future project.
*99 BMW Z3 30k miles owned from new.
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| 6th Nov 2021 9:41 am |
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Devon Z
Member Since: 14 Nov 2019
Location: Brixham Devon
Posts: 251
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Pete K wrote:Yeah using high quality fuel Or cleaner the month before is good to remove carbon.
But if I lived somewhere where is only fit to 1C, I wouldn’t be going near them! 8)
I’ve had the car three years now and it was only last winter that it was an issue 4 times, once the outside temp reading on the dash drops below 2 it won’t start.
Generally here on the coast we get one frost a year! Steve
*2005 RR Sport 2.7tdv6 HSE. Current project.
*98 Volvo V70R FWD, owned 14 years, future project.
*99 BMW Z3 30k miles owned from new.
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| 6th Nov 2021 9:49 am |
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Breg90
Member Since: 04 Feb 2017
Location: Falkirk
Posts: 360
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I did my glow plugs. You can get a low torque impact gun for it. Only one moved at 20 Nm start start with. So used Kroil penetrant on the glow plugs for 10 days. They then came out using 20Nm of torque. But I did not have a carbon build up on the end of them. Series one 1949 - in bits, chassis is strapped to the ceiling in my garage (beside the canoe)
LR 90 - In bits
Disco 3 - currently in bits
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| 6th Nov 2021 12:27 pm |
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Flapper
Member Since: 04 Feb 2015
Location: Gloucester
Posts: 352
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| Here's the Resistor mod for non-starting Discos -1 next week |
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Hi all
I have had this mod fitted for 3+ years I use it only when required, which is about 10 times a year. It cost less than a fiver to do. My car is a 2005 with117000 on it.
It's a cheap fix that gets it started, I may get the plugs done but I'm in no rush.
It just works and you don't need to be a electrician to do it.
Kit required
Wire 3 metres
Soldering iron or chopblock or crimps
2000ohm resistor or 3000ohm but not more than 5000ohm
A button or switch.
That's it see above photos and diagrams it really is simple to do and so far works down to -3
You can even just unplug the sensor and just put the resistor in the end of the plug. It's just a simple solution adapted from poring boiling water on the same sensor.
See the start of the post for photos and very poor diagram.
F
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| 1st Dec 2022 1:50 pm |
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classic kev
Member Since: 12 Feb 2021
Location: Mold
Posts: 204
 
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I prefer having working glow plugs and so does my engine.
4 of the 6 glow plugs are not difficult to reach so there's no reason not to at least put a spanner on them and see if they will move. I was lucky all mine were easy to undo but IMHO better to go with glow plugs first. If they're seized then resistor; more palatable than the grief of snapped glow plugs.
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| 5th Dec 2022 3:33 pm |
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Flapper
Member Since: 04 Feb 2015
Location: Gloucester
Posts: 352
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So far Tim fry have had a go and couldn't do them, and BG landrover had a go and couldn't do them either so that's 2 independents and land rover want 5k
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| 5th Dec 2022 9:19 pm |
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