Ive gotta 2016 300xs that I had the tracker valve replaced last fall. Reason being was the rpm would jump around soon as the motor was started and has fuel running out of the midsection onto the lu. Ran great since then til this past Friday. After a couple of runs I started it up to take off and noticed a miss in the motor. Then it started to surge and had fuel in the water around the boat. Pulled it out of the water and checked the tracker again and it looked good. Replaced with a new one to make sure and same. I checked the schrader valve in the air rail and a fuel mist blows out. After research everything says the air rail regulator diaphragm cant be replaced. Why is this and has that changed now? If so who sells them? Could anything else cause this problem?
1. 1E053040
2. 2016/Mercury/300xs
3. 29p Bravo xs
4. 6k rpm max
5. Idle 3psi and WOT 18psi Water Pressure Readings
6. Smartcraft