The biggest problem people have when upside down is they give it gas. If youhold the brakes on the truck/buggy will idle longer than you giving it gas, since there isonly x amount of fuel in the line and idleing will consume less fuel.

I fortunately do not have flame out problems (fingers crossed, knocking on wood). But I think alot has to do with glow plug selection and also tuning. I htink tuning is more that the glow plug. I am not sure if the pressure line length has much to do with it.

people must remember that runnign a engine to rich can have the same bad effect has runnign it to hot.