Several years ago I posed the question about carbon monoxide and diesel engines. I read an article many years ago, and also took part in a discussion a long time ago about carbon monoxide poisoing and diesel engines. The article stated, that a diesel engine is so efficient that it produces no carbon monoxide, and that point of view was backed up by most in the discussion, but some others took an opposite viewpoint. After searching on the net, I was unable to come up with conclusive proof that diesel engines DO NOT produce carbon monoxide, although that remains my belief to this day. I don't ever recall reading about any carbon monoxide poisoning incidents unless they involved a gas engine. Does anybody out there know for sure? And can you back it up one way or another with proof from an authoritative source?