[mbo_1971]

Thanks for all the thoughts here guys. Just to clarify a few things:

Line sizes - I believe I misspoke. They are 3/8" from the tank to the filter and 5/16" from the filter to the bulb and then through to the motor.

One other thing - when this issue occurred the first time, I was concerned it was the filter so I disconnected the fuel supply to the filter, blew back through it and then connected directly to the fuel bulb. Ran no issues all the way back to port. Next time out i reconnected the line to the now new filter and after 30 min of running, same issue. That set me down the line of thinking that it had to be the filter. After calling the folks that sold me the motor, he said no way it is the filter (it is the proper size for that motor 100% guarantee). He suggested anti-siphon valve, but I really dont know what/where that is.

Not sure where the anti-siphon valve is - is it in or attached to the elbow coming out of the tank to which the supply line to running to the filter is attached? I understand these can clog due to e10. That elbow and the line that extends from it down into the tank to pick up gas were the only items that was not replaced in my fuel system.

I have not checked venting - but to that end, if i run without the fuel cap on, dont i run a pretty big risk of getting water in the fuel?

One other question - i know small outboards have a clip that helps hold the fuel line for a remote tank on. Is is likely that my motor would have one of these? Since the mechanic installed the corrugated hose that neatens things up and houses the battery, shift linkages and fuel and oil lines, I can not tell if my motor would have one. I would think not, but just wanted to bounce it off you guys.

Thanks again for the comebacks.

Matt