At what temperature does carbon ' burn ' ?

LOL...

Only your first sentence is true....
But... do you know how small those holes are ?
what are the chances that pieces broken off in the reaming process will be that small... ?

Can you point me to that FSM reference ?
I have not seen it.... and many times the info for something is hidden in another section.. or in a ' maintenance ' manual published later ...

__________________
1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/showthread.php?threadid=10414

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/diesel-discussion/156207-photo-step-step-post-showing-w123-evaporator-removal-1983-240d-1982-300td.html?highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html