Plugs at 70k

[Bimmer Barney]

Second change since new. Good even wear, no oil on the terminals and they're dry. Definitely due for replacement but signs of a healthy engine. Some oil on the thread is a sign of leaky valve covers which I knew about.

Pro Tip: if you remove the ecu lid and the furthest right wire harness rubber grommet (just slip it out of the way), it's a straight shot to the rearmost plug and makes it easy.

[roastbeef]

i'll have to try that trick next time.

plugs don't look too bad. i didn't have any oil on mine, but i seem to have a good set of valve covers as well. i didn't know they were related.

[Bimmer Barney]

Originally Posted by roastbeef

i'll have to try that trick next time.

plugs don't look too bad. i didn't have any oil on mine, but i seem to have a good set of valve covers as well. i didn't know they were related.

If oil on the electrode/terminal then its leaky piston rings, if just on the threads then leaky spark plug tubes (or generically speaking leaky valve cover gaskets)

[roastbeef]

Not the greatest pic (and in no particular order), but my plugs were pretty dry... maybe a tiny bit of film on one or two, but one of yours almost has enough oil to make a run.
70k and change on my car. About 30k on the plugs.

[Bimmer Barney]

Ecu angle