Member Since: 04 Mar 2021
Location: Ireland
Posts: 71
Injectors readings
Car a bit lumpy on idle sometimes.
Used the autel no codes - looked at injectors live data and all have a figure of around 600 except no 5 which has 1300.
I don't know what the figures mean - when I look further at info it say injector 3 in bank 5 which doesn't make sense to me.
Any advice?
16th Dec 2023 12:55 pm
Worms
Member Since: 24 Sep 2023
Location: Highlands
Posts: 268
injectors are numbered 1-2-3 down the left bank as you look at the engine from the front of the car, while cylinders are numbered alternately, so 1-3-5 down the left bank and 2-4-6 down the right. So injector 3 is in cylinder 5.
I recently was getting similar readings to yours and a fault code for balancing. A couple of treatments with an injector cleaner in the tank, has cleared the problem - perhaps only temporarily, but it is gone for now.Previously:
2010 FL2 TD4e GS
‘93 Defender 110 200TDi CSW - still got this, non-runner on SORN.
‘87 Defender 90 4 cyl Petrol
‘83 110 CSW V8 - best ever!
Range Rover 2-door V8 (not sure of year - 4-speed box and vacuum diff switch)
Series III SWB Diesel
16th Dec 2023 1:07 pm
DL_Disco
Member Since: 04 Mar 2021
Location: Ireland
Posts: 71
Thanks That now makes more sense
16th Dec 2023 1:52 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10367
i think the target value is 1000. (or just under)
So you have probably have 1 injector at fault.
16th Dec 2023 5:23 pm
DL_Disco
Member Since: 04 Mar 2021
Location: Ireland
Posts: 71
Silly question is this the back injector on the left when standing in front of car?
Click image to enlarge
Click image to enlarge
21st Dec 2023 12:24 am
Worms
Member Since: 24 Sep 2023
Location: Highlands
Posts: 268
Yes, injector 5 is in cylinder 3, back left as you look from the front of the car.
You might find this thread of interest: https://www.disco3.co.uk/forum/need-replac...02536.htmlPreviously:
2010 FL2 TD4e GS
‘93 Defender 110 200TDi CSW - still got this, non-runner on SORN.
‘87 Defender 90 4 cyl Petrol
‘83 110 CSW V8 - best ever!
Range Rover 2-door V8 (not sure of year - 4-speed box and vacuum diff switch)
Series III SWB Diesel
21st Dec 2023 8:36 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
1,2,3,4 & 6, look to be performing equally. Sometimes replacing an injector that appears to be out of trim can move the problem to another injector, or the next one in the firing order. (game of musical injectors begins )
Make sure the seats are spotless clean, and do not reuse the old copper washers!yµ (idµ - eAµ) ψ=mψ
21st Dec 2023 2:42 pm
DL_Disco
Member Since: 04 Mar 2021
Location: Ireland
Posts: 71
Thanks
What causes the problem to move?
21st Dec 2023 4:01 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
Injector balance is controlled by the PCM,
if the PCM detects an injector over fuelling or under fuelling, it will try to balance out the problem across some or all the injectors. In your case it seems the other 5 are very even, so one replacement might well do the trick without further action. You won't know until you fit the injector, which then might throw an imbalance elsewhere. If that were the case you'd have to swap around one or two injectors, but only if the imbalance was significant!
Worse case scenario is that more than one new injector is required, but it's a case of "suck it and see" When you fit the new injector you'll see the other injector trim levels change, (normal) its the scale of that change that youll be watching out for. It would be prudent to have a few spare copper washers just on case.yµ (idµ - eAµ) ψ=mψ
21st Dec 2023 4:47 pm
DL_Disco
Member Since: 04 Mar 2021
Location: Ireland
Posts: 71
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