Originally Posted by
Jonzarno
Another point is that CO poisoning is much less likely if the engine is being run lean of peak as that allows complete combustion of the fuel so that CO is not produced.
Please do not believe this, as it is NOT true. All internal combustion engines produce carbon monoxide. Indeed, all naked flames wil produce small amounts - it's an inescapable fact of combustion. The problem with carbon monoxide is that when breathed in it avidly attaches to haemoglobin as it appears just like oxygen to the haem moeity. Unfortunately, unlike oxygen which floats off readily, once attached the carbon monoxide is very difficult to remove, typically taking 4 hours in air to dissociate. Thus small concentrations in air gradually accumulate to much higher concentrations in the bloodstream. Once the carbon monoxide is there it prevents oxygen now being transported round the body and this will lead to headaches, nausea, vomiting, fitting and death.
I repeat. All internal combustion produces carbon monoxide which is lethal. Please do not suggest anything different.