The day started out good...
So after dealing with what I thought was a bad tank of gas (E-10, found out the hard way, rebuilt the carb drained the tank) the ol' 5.7 seemed to be running good again. It rain great in the drive with the muffs on, and ran pretty good on the lake today. After some swimming it was time to head back and it was real hard to start. Turned over fine but just didnt want to fire. Finally got it going and ran good back to the bridge where we had to slow to go under (no wake zone) and it was running rough at idle again. Ran back up on plane but could tell something was amiss and it lost all power and wouldn't rev anymore, had some popping on the exhaust side. Had to idle back to the dock, when I could keep it running, anything more than that and it wouldn't run at all. Oil pressure was good, temp was good (hopefully the gauge is working right), no alarms going off. I wonder if I still have some residual water in the tank causing the problem, I couldn't completely get the tank empty, but got most of it out. I added some Startron Enzyme treatment that is supposed to prevent and cure E-10 problems before I filled up last time. I am going to check the timing, plugs, and make sure it is pulling water from the muffs tomorrow. I hope it is something simple, I really enjoy this boat.