Hello
I have a 1979 Merc/Mariner 70 hp 3 cyl 2 stroke 700 with the Thunderbolt ignition.
The engine runs well, but does not go above 3100 rpm.
So far, I've ruled out the compression, carbs, fuel pump, bad fuel, stator, coils, trigger, spark plugs, spark plug wires, etc.
The only thing I...