2008 LR2 Spark Plug Gap?
#1
2008 LR2 Spark Plug Gap?
I got these Champion plugs from Atlantic British: Spark Plug (LR005483 Same Fit As Part # LR005483 ) - Land Rover ignition from Atlantic British
The OEM plugs are a different design, not gappable. Any idea what gap the Champions should have? They came with a gap between .035 and .040.
Also...both outboard plugs are blacker than the four inboard plugs, they also appear a bit wet and smell like fuel. Anybody seen this before? I'm hoping residual fuel, not oil.
The OEM plugs are a different design, not gappable. Any idea what gap the Champions should have? They came with a gap between .035 and .040.
Also...both outboard plugs are blacker than the four inboard plugs, they also appear a bit wet and smell like fuel. Anybody seen this before? I'm hoping residual fuel, not oil.
#2
Spark Plug Gap
For the NGK plugs ILRF6B
Gap to .75 mm (about 0.030")
EDIT: I took this information from the workshop manual but I don't believe that it matches how the engine was actually built, I believe that the stock sparkplug gap should be a lot larger than .030"
Note: I installed the plugs shown below (2.5 years ago at 50,000 miles)
6x 5344 Denso Iridium Spark Plug. Part # IKH20
I didn't adjust the gap
Edit: The Gap for the 5344 is .044" from Denso
And I am very happy with these plugs
All of my old plugs looked good (none were wet)
Good luck
Paul
2008 LR2 3.2 SE
Gap to .75 mm (about 0.030")
EDIT: I took this information from the workshop manual but I don't believe that it matches how the engine was actually built, I believe that the stock sparkplug gap should be a lot larger than .030"
Note: I installed the plugs shown below (2.5 years ago at 50,000 miles)
6x 5344 Denso Iridium Spark Plug. Part # IKH20
I didn't adjust the gap
Edit: The Gap for the 5344 is .044" from Denso
And I am very happy with these plugs
All of my old plugs looked good (none were wet)
Good luck
Paul
2008 LR2 3.2 SE
Last edited by p_gill; 02-23-2021 at 01:16 PM.
#4
Update... time for new plugs again. I used Denso 4704TT this time, noticeable increase in power due to the twin tips. Thanks again Paul.
More details on the Brit forum...
https://www.freel2.com/forum/post404393.html#404393
More details on the Brit forum...
https://www.freel2.com/forum/post404393.html#404393
Last edited by merlinj79; 02-22-2021 at 06:06 PM.
#5
Last edited by LR2driver; 02-22-2021 at 03:31 PM.
#7
On further reflection and research, those plugs with the oily electrodes and threads are probably a symptom of leaking valve stem seals on cyls 1 and 6. Valve seals haven't been discussed much on this LR forum, but they are mentioned more in the Volvo forums for the same engine.
Ideally, the valve seals would be replaced if you notice oily plugs, and you have normal compression (to eliminate faulty piston rings as the source of the oil). But it's a big job.
Ideally, the valve seals would be replaced if you notice oily plugs, and you have normal compression (to eliminate faulty piston rings as the source of the oil). But it's a big job.
Last edited by LR2driver; 08-06-2022 at 07:11 PM.
#8
#9
#10
We do winter trips in the Sierras, not much colder than 20*F. Never had misfires.