Need a Marine Mechanic - 150HP Johnson

[Gerry Zagorski]

Might be the oil level sending unit in your oil sump... Not sure how your engine works but on the older Mercs they had a float in the sump and it would occationally get stuck, especially after you titled the motor up... If the float sticks it thinks you have no oil in the tank and this would send the motor into alarm and safe mode which would retard the engine and make it run very rough.