On Thu, 23 Jun 2011 08:07:37 -0500, Richard Casady
wrote:

On Wed, 22 Jun 2011 22:58:36 -0700, wrote:

Actually, they do... I had to look it up. Seems to be only under load,
so unless it's under a lot of load, you're ok.

If you want the last bit of power, you use excess fuel to insure that
all the oxygen in the air is utilized. Since a Diesel ingests the same
amount of air regardless of load, at a given RPM, at part power there
is excess air, and all the fuel get burned. So only trace of CO.

Casady

Yes, that's what I read... just a trace. I don't know how many PPM are
required to cause harm, but I'm betting zero is better than anything.