This problem is very frustrating. My carbs and fuel pumps were over hauled last year. Motor runs great when under way and starts with no problem. Except when I stop and drift for about 30 minutes. Normally one would just turn key and go. This motor will not start unless you squeeze the primer bulb 1-2 times and apply use the starting throttle, why is this.? I replaced the fuel lines with 3/8. I have 18 gallon vertical type fuel tank with the lines above the tank, the carbs on the motor are above tank level. I am using the see thru generic fuel filter (cartridge type) from west marine. alot of times I see air in the fuel filter and it is never full of fuel except when it is initially primed, never full while under way. Is this normal? are my carbs emptying back into the tank? I replaced the bulb with an oem merc and still the same problem. the bulb gets rock hard now which it didnt used to. if air is getting in, where is it comming from? I have no fuel leaks. I dont have an anti siphon valve. would this help? my tank vent is also clear. Can anyone shed any light on this?<br /><br />russ
