In Reply to: Re: 52 8n posted by Frank (WNY) on January 03, 2018 at 14:40:44:
You already have a vacuum from the valve/piston action. Pulling the choke out gets you a richer mixture, ie, more gas than air which makes it more volatile. If the spark does not ignite that overly rich mixture, then yes, the vacuum pulls too much gas into the cylinders and that's how the engine gets flooded. The plugs get wet & they won't give you enough spark to ignite the fuel.