Spark plugs - look ok? A bit of oil coming out from plug hole

[Dino D]

I smelt some slight burning oil smell so had the plastic cover off and noticed that at the last cylinder coil pack (one by the bulkhead) a bit of oil was present and I assume making its way onto the exhaust manifold.

The plug felt tight when I removed it (I torqued them to 25nm when fitted last year).
There was a very small amount of oil on the outer of the coil.

This is the plug itself:

Is the burn ok?
I read on Pelican parts notes on changing plugs that the oil leak could be from the gasket and not necessarily the plug?

 

[Dino D]

The rest of them:

 

[5harp3y]

More likely the gasket, when was it last changed?

It's an easy job to do on the M52, I've done a step by step in my build thread

 

[Dino D]

More likely the gasket, when was it last changed?

It's an easy job to do on the M52, I've done a step by step in my build thread

I've never done it, will have a look thanks.

 

[5harp3y]

I've never done it, will have a look thanks.

Dead easy

 

[Brian4]

Yes easy to do. The rubber gasket gets brittle and starts to weep. One gasket around the outside of the cover and a small one around each plug hole.worthwhile changing the rubbers on the cover bolts as well.