I have a 09 honda 75hp 4strk about two weeks ago I started having problems with my outboard surging at WOT. I have changed external fuel filter, all external hoses and still have the same problem. I have replaced all internal filters.
(1. if I connect fuel tank straight to engine problem goes away. tank-hose-bulb-hose-engine)
(2. if new external fuel filter is added to (1.) problem comes back)
This only happens at WOT. When this is happening if I pump the bulb up about 10 times it becomes hard and the problem goes away.
However, in about 10 minutes are so, it happens again. I repeat the process of pumping the bulb up and it goes away for about 10 more minutes. Note this only happens during WOT. all other times runs find.
(1. if I connect fuel tank straight to engine problem goes away. tank-hose-bulb-hose-engine)
(2. if new external fuel filter is added to (1.) problem comes back)
This only happens at WOT. When this is happening if I pump the bulb up about 10 times it becomes hard and the problem goes away.
However, in about 10 minutes are so, it happens again. I repeat the process of pumping the bulb up and it goes away for about 10 more minutes. Note this only happens during WOT. all other times runs find.
