Re: Unburned fuel

[vintin]

quote Bill McNamara:

VinTin, good idea to bring those vapours back up to burn, otherwise they could collect in the bilge area, My application has a motor deck too, so air exchange may be limited.
Curious as to what volume of air/fuel mix we’re talking about???

I was running my motor one evening after dark in a tank and had pulled the return to the air box fuel line off of the one gallon tank. I noticed a stream of vapor about 10 inches long and a couple of inches wide in my flashlight beam. No doubt a highly combustible mix! This was as idle and surely more flow at higher rpm’s. It was a ah ha moment and it made me realize that we should be accounting for this vapor as it may present a possible hazard.