Paradise773
Recruit
- Joined
- Jul 24, 2022
- Messages
- 2
Have had ongoing issues with my 2015 Mercruiser 4.3L TKS (carbureted) / Alpha 1 I/O. After running it for 30 minutes at 2000 a 3000 RPM on the lake, I head back to the dock, throttle back, and it dies. Can only restart it at 1/2 throttle+ but as soon as I cut the throttle to get it in gear, it dies again. Thermostat showed below 175 degrees. Unscrewed gas cap and did not hear a hiss.
Brought it into repair shop who spent “hours on it” and didn’t find any issues. They did not do a lake test despite my multiple requests.
Is there a checklist of steps I should do to rule things out? I’m a newb to boating and boat engines.
Thanks in advance!
Brought it into repair shop who spent “hours on it” and didn’t find any issues. They did not do a lake test despite my multiple requests.

Is there a checklist of steps I should do to rule things out? I’m a newb to boating and boat engines.
Thanks in advance!