Spark Plugs

[1982targa]

Changed plugs for the first time this weekend, along with an oil change, new braided wires, and valve adjust. Took a lot longer than I expected but all went well.

Can I get expert opinions on the images below. These are two of the plugs that came out. These are the "worst" ones. Please feel free to elaborate on what you see.

[1982targa]

ps Newbie to this forum question: Why are some thread titles Bold and some are not?

[Gunter]

Deposits don't look normal to me.

Could be some leakage of valve guides/seals along with wrong heat value for the plug.
Also, too much oil showing on the threads.
Were the plugs loose?
Worn rings?

What Mileage?
What type plugs are these?
Bosch??? Number??
NGK???Number??
Or??

Along with valve-adjust, I recommend checking the torque for the head studs 23-24 ft-lbs and the position of the rocker shafts.

[snbush67]

Nice pictures..great resolution;

It looks like they were in there a while (normal worn electrodes), looks like the system had a recent adjustment to lean (white over the normal deposits) overall I would say they dont look too bad. But if a recent adjustment was made then change it back to the richer setting.

[T77911S]

agree with above in that they look like they have been in there for a long time. the research i have done on reading sparkplugs says that to get an accurate reading, as far as timing and mixture, you need to look at newer plugs and to REALLY read them you need this little magnafying glass that allows you to look down in the plug.
even though they look like they have been in there for a while, they dont look that bad.
you can see a lot of wear on the electrode on the one on the left
put some new ones in and drive for a while and recheck.