Hey guys, I know this gets talked about lots but here it goes. I ran my boat yesterday and it started first crank no problem. We went for a little run and I noticed there was a slight lack of power, then when I went to pull back on the throttle it cut out. I started it right back up then I had no power, couldn't get the boat on plane. so I idled back to the dock and went home and did a compression and spark check.
Compression was good and so was the spark on all 6 cylinders. I checked all the timing and it looked good, the cam roller was just replaced and is still good as well.
The only thing I wanted to check but I forgot was to make sure I had pressure sucking in on all 6 cylinders and no gas spitting out. All the carbs were taken off and cleaned last summer, might have 6 trips since they were cleaned.
When I was letting it warm up and waiting for my buddy to park the truck I noticed the tach was reading high at idle and bouncing around. When we took off the tach would bounce around but then it worked itself back to where it should be.
Any ideas on where to start here?