Mystic Mariner
Cadet
- Joined
- May 7, 2023
- Messages
- 22
I just put a new head gasket on my Johnson 45 HP commercial, pressures are 145 upper, 135 lower. Engine is running at normal temperature and is now popping for some strange reason. Check out the video. Plugs are brand new and clean, mixture is new gas and 50 to one, I have some Seafoam in the tank to clean the carbs. Not sure if this is ignition, or a lean condition? any suggestions?