Checked valve clearance...got nasty suprise?!

[tmontague]

That is strange, I agree with Adam that is appears to he corrosion and not wear from lack of lubrication. That is strange however.

I'd leave it as is and drive it until/if it creates problems. The 1nz is very venerable and chances are it doesn't care about the pitting.

Just run a good quality oil changed regularily from here on out

[06YarisRS]

Originally Posted by tmontague

That is strange, I agree with Adam that is appears to he corrosion and not wear from lack of lubrication. That is strange however.

I'd leave it as is and drive it until/if it creates problems. The 1nz is very venerable and chances are it doesn't care about the pitting.

Just run a good quality oil changed regularily from here on out

The valve train might live a long life in that condition and who knows how long it's been like that. I read some info on spalling and galling of camshafts. EDIT: having trouble with a link. Will post when I sort it out.