SPARK / ignition issues, changed plugs to NGK - worse. Was FoMoCo tri tip sparks before Topic is solved

[pgill]

Thanks for the follow up on the Denso Plugs.

I run mine at .040"

In later years Denso shows a gap of .028" (Actually 0.8 mm which is .031")

The later twin tip plugs are used in the 3.2 and the 3.0T

For Turbo applications a smaller gap is typically used because the boost increases the needed Voltage at the coil. The smaller gap reduce the voltage requirement to form a good spark.

I am replacing plugs every 50,000 miles.

For my 3.2' I own

2008 LR2 3.2

2010 S80 3.2

If you want to see what goes wrong on 3.2's over 100K then take a look at my thread on the land rover board

https://www.freel2.com/forum/topic32504.html

And if you want to read about me doing most of the items listed in the above link for my S80 3.2

viewtopic.php?f=31&t=87687

The pictures are great and very helpful

Thanks for posting them.

Note: the motor mounts for your P2 are different than my P3 vehicles

Thanks

Paul