Spark plug condition

[rswaffie]

Hi
I decided to check the condition of my bpr5es plugs after 400 miles of running in my rebuilt 3.8 engine.
My question relates to plugs 1 and 6, as the others seem ok. Plug 1 was a bit wet with an oily substance and the electrode is quite sooty. Plug 6 also seems sooty but not wet but it does have some sort of crusting around the top. Any thought as the what may cause the condition of 1 and 6, and do the others look ok?

Plugs 1 & 2, (1 on the right)



Plugs 3 & 4, (3 on the right)




Plugs 5 and 6, (5 on the right)



And a closer view of number 1

[cactusman]

They look pretty OK to me with the exception of no 1 which looks mildly sooty.....I'd not be concerned...

[Series1 Stu]

The crust on number 6 could be from water standing in the plug well. Possibly getting in through the louvres? This will obviously evaporate off when the engine runs.

Regards

[rswaffie]

Thanks guys.

[ralphr1780]

Richard, sorry to say but your plugs do not look pretty to me, some matters should be addressed.
For comparison, here is a pic of my plugs after 1500km:

[rswaffie]

I’ve replaced them with new and will check again at 750 miles.