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I have been beating my head against the wall for weeks now with this motor and I'm stumped. Every now and then the motor fires up, idles and revs fine. All other times it will fire up but spit and sputter, sometimes stall out and when I give it gas it acts like it's bogging down or starving for fuel. I have drained and flushed both tanks by siphoning out through the gas line which tells me no blockages and fuel ball does not go flat, refilled with fresh fuel, injectors have been cleaned and flow tested, o2 sensor has been checked, all plugs are new seem to be sparking fine, I replaced the ECU just because I had a spare laying around and wanted to rule that out, the VST is working but I have not done a pressure test yet, VST filter and filter on motor were replaced last year. Last year when I had it on the water it ran low 70s (slow for what it should do) then the next time I took it out barely ran mid 60s then the last time I had it out spit and sputters, barely planes off and fell on its face
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