1B287307 06 150 optimax 339 hours
rough idle. Seems worse in gear when in the water. It has new plugs and wires, I’ve performed a power drop and can’t see a obvious change on any cylinder. Removed and inspected tracker valve, pressure regulator and pulse pump diaphragms, they all look good. I’ve verified fuel to air pressures to be 90-80as it should be. Any thoughts as what to look at next?