L have a 1964 muti power 65 while i was bushhogging today started losing power and black smoke when i put a load on the motor is this the fuel filters stopping up motor will still rev up just lost power no motor noise at all sounds normal help if you can
Black smoke = soot, oil, unburned ==> incomplete fuel combustion
Among possible causes:
Incorrect fuel injection timing
Dirty or worn fuel injectors
Over fuelling
Faulty turbocharger, or turbo lag
Faulty or dirty exhaust gas recycling (EGR) system
Incorrect valve clearance
Incorrect fuel to air ratio
Dirty or restricted air cleaner systems
Over loading the engine
Poor fuel quality
Cool operating temperatures
High altitude operation
Excessive carbon build-up in combustion and exhaust spaces
I would start by checking your air filter(s) and connecting hoses for blockages and dirt. Cleaning and replacing these parts is easy.