I attached the engine plate. The valve on the carb is off. It is letting too much air in at times and not enough at times. 1988 Mach I Saturn II it is an inboard motor. Any help would be great. It seems like the timing is off.
Re: Carb diagram for MerCrusier/valve not closing properly
advance throttle lever a bit, plate should close to within a 1/8 inch of fully closed.When engine is at normal temp the plate should be wide open. adjustments are made by loosening the choke heater element screws and rotating the element. http://www.boatfix.com/merc/Servmanl/13/13B5R2.PDF