> Just a question, and forgive my ignorance here. Describe what rich means
> please. Does it mean more fuel, more power, more air, less power? I'm
> curious. If someone would take the time to explain this I would greatly
> appreciate it. Thank you.
>
> --Paul--

Paul, I think it's rich as in more fuel than usual.  The incomplete
combustion leaves unburned gas behind, and this gas cools the exhaust valves
while exiting.  A spark plug inspection could reveal if the engine is
running rich, or you could look inside the tailpipe for excessive carbon
deposits.

Chris.