Could an exhaust gasket leaking have any affect on the engines mid range preformance? At about 3000 rpm the engine seems to stuble as if it wants to die but never does. It shakes and seems to run a little ruff.any ideas would be helpful
I'd think an exhaust leak would effect it all the time.I'd check the fuel system for water and gunk.
Ethanol is messing up a lot of motors.It's delaminating the inside of older hoses causing clogs in the carbs and fuel filter.Check for soft hoses and junk in the filter on the motor.Check the diaphram J