I pulled the valve cover off the Benz in prep for a head gasket today so I could check timing chain stretch (common on these engines). It looks like the timing chain has been replaced at some point, BONUS!
Anyway, I was pleasantly surprised that the cam lobes looked pretty good. I could still see machining marks on them? What do you think?
Number 1 lobes
Number 2 lobes
Number 3 lobes
Number 4 lobes
Number 5 lobes
I hope I'm not wrong here, but I think those look good for 290K miles. The number 4 and 5 intake lobes seem to look discolored, but I think it looks like that because those two cylinders are reflecting the under-hood insulation, the other 3 are getting the sky reflecting???
let it eat.
