Son of Sam wrote:
> Can you tell me how to spot this leak? Are they easy to detect?
>
> Thanks for the information. I'll definitely be watching for these
> warnings. Is it possible though, for one to not smell anything but
> still be getting carbon monoxide poisoning or something?

Don't just watch for those symptoms. For the sake of your safety and
that of other drivers who would be endangered if you pass out behind
the wheel, please get your exhaust system checked and repaired right
away. It's not worth the risk to wait it out.