KevinRHutchens
New member
Have a 97 Mariner 25hp, both cylinders test 110psi. Carb has been rebuilt and works flawlessly. Have an issue with losing one cylinder after about 4 hours of idle trolling to a rich condition. I'm thinking coil fizzling out but heard it could be reeds but don't see how it could run well for hours and then foul out one cylinder is it were reeds?