Member Since: 05 Sep 2014
Location: Newquay
Posts: 1014
Cylinder Balancing Offset Query.
I had a bit of a play with the IID BT this evening, looking at the live values and stuff. I looked at the cylinder balancing offset for all six injectors. I got 3 cylinders with similar readings and 3 dissimilar readings.
Does anyone know a what the readings are, value wise and what range they should they be in.
Here they are at idle.
Click image to enlarge
Thanks guys.Freelander SE 2005 Auto.
D3 TDV6. Gone.
5th Mar 2015 7:57 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
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The exact book figures have moved about a bit over the years and they are just a guide:
Quote:
18 . Run cylinder balance test from 'live data'.
Injector balance limits are between 960 and 1.4 k.
I would not worry about your numbers.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 05 Sep 2014
Location: Newquay
Posts: 1014
Thanks Robie and DM I'll not worry about them until I get a problem. I thought it was worth checking, especially with 170K miles on the clock.
Cheers guysFreelander SE 2005 Auto.
D3 TDV6. Gone.
When do you do the test? I would guess once the car is nice and warmed up.
Mine are worse than that, I'm sure though. Mark.
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5th Mar 2015 9:18 pm
Robbie
Member Since: 05 Feb 2006
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The values do change slightly between cold to warm and the fuel temp makes a difference too, but they should remain relational. If not then there could be an underlying mechanical issue.
Probably time to drag this bit up too:
Robbie wrote:
When it comes to numbering there can also be confusion with code readers, live values and injectors. The ECM actually lists the injectors as 0 to 5, with 0=cylinder 1 and 5=cylinder 6. Cylinders 1 to 3 are also known as Bank A with 4 to 6 as Bank B. To keep a common format and to make it easier to understand some code readers list the injectors as 1 to 6.
Others list by firing order (1 - 4 - 2 - 5 - 3 - 6) which, for a RHD vehicle can make it:
- Driver’s side front cylinder, cylinder 1, injector 1
- Driver's side centre cylinder, cylinder 2, injector 3
- Driver's side rear cylinder, cylinder 3, injector 5
- Passenger side front cylinder, cylinder 4, injector 2
- Passenger side centre cylinder, cylinder 5, injector 4
- Passenger side rear cylinder, cylinder 6, injector 6
The big arrow faces the direction of forward travel:
This has confused the heck out of me at times, but then my brain is very small.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 10 Sep 2012
Location: Northampton
Posts: 1034
The last time I checked injector 1 was reading 1230 and the others were between 950 - 980.GAP IID Pro Multi Vehicle Defender L316 2007-2015 - Discovery 3 - Discovery 4 - Discovery Sport L550 - Freelander 2 - Range Rover Evoque L538 - Range Rover L322 - Range Rover L405 - Range Rover Sport L320 - Range Rover Sport L494 Electrical Fault Diagnostics
5th Mar 2015 10:23 pm
MattTheTall77
Member Since: 24 Oct 2013
Location: Lincs
Posts: 268
Robbie wrote:
MattTheTall77 wrote:
Injector 3 (cylinder 2): 1394.81
Yep, that is pretty high. Have you done any further diagnostics / spill check etc?
Not yet, it was in for the MOT the other week and asked for them to be looked at with a quick check. I need to decide whether to get them taken out and individually checked (not sure how much that costs yet), or just replace them all with the group buy on at the moment.
5th Mar 2015 10:28 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
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Replacing them all would be excessive and I am sure you have better calls on your wallet.
A spill check would probably be my next step and take it from there.
Land Rover - Turning Drivers into Mechanics Since 1948
It's difficult to get exact readings as the values hunt all over the place. I simply took a screen shot off my phone. Obviously this is a freeze frame at one split second. The engine runs OK so I'm not worried at the moment.Freelander SE 2005 Auto.
D3 TDV6. Gone.
5th Mar 2015 10:53 pm
Bobs
Member Since: 29 Oct 2013
Location: Manchester
Posts: 2330
I may be wrong
I remember reading a thread that basically meant that although one injector maybe say running at 1200 it is being 'asked' to run at that level to compensate for others that are running low ....
So in other words the one at 1200 may be the best one D4 Front upgrade/cut back wings n things 'taking a long time but getting there'.
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