My well cared for 318 is hard restarting after running 20 minutes or more. Fresh gas with sea foam and clean gas filter.
Prior to the last oil change, I added the proper amount of sea foam to the oil and then drained it.
Should I pull the plugs a give them an eyeball or just change them?
My neighbor had that problem begin two years ago, and after plugs, wires, coil, voltage regulator, fuel pump, new fuel lines and filter, it wound up being item # 16 below, the ignition control HE166-0785.