I have a 2016 Triton 189TRX with a E-Tec 150 HO outboard, both purchased new. Boat/motor ran well until last summer. First indication of a problem was the E-Tec suddenly losing power when running on plane. On a few occasions, just stopping and restarting motor took care of it, but a few times I had to squeeze the fuel line bulb. Second issue occurs after stopping and fishing an area for awhile. When trying to start outboard,
it would turn over for a few seconds and stop. Repeated attempts were the same until I used the fuel line bulb, at which time it started with a few more attempts. On every occasion, these problems occured in the afternoon after it ran and started successfully all morning. I believe that in all
instances, my 41 gal fuel tank was only 1/3-1/2 filled. Boat was taken to local dealer last year who was able to replicate the problem. After checking everything, there was some concern about the low pressure pump intermittently malfunctioning, so that was replaced along with the fuel line bulb. Also replaced my starting battery with a Odyssey grp 31 AGM. Boat ran fine for the rest of the year, and I assumed problem was solved.
Last week, the problem recurred. Everything checked out ok at the dealer. They felt that the check valve on the line coming out of the gas tank
might be intermittently malfunctioning. Valve has been temporarily removed, and I will be testing things out later this week. Don't know if this is an issue but most times when I open my gas cap, there is a significant rush of air out of the tank. Any help would be appreciated. Sorry about the lengtyh of the post. Thanks.