I am running a one year old 20 HP 4 stroke. I am using non ethanol gas and disconnecting my fuel line after each use and running out of gas in the line. Lately my engine has been choking out and sometimes stopping soon after launching. I normally warm it up while parking my car so it's not like I am taking off cold... Bulb is pumped and full but it acts like it is not getting a good flow of gas. Could it be that there is a little air in the fuel line after re-connecting the line? Is there any way to avoid that? Is it really beneficial to disconnect after each use one only for long periods on non use? Will appreciate the Forum's thoughts on this!