Fuel Systems

Intake & Exhaust	Intake & exhaust systems	Carbureted systems; Electronic fuel injection systems; Diesel induction systems; Exhaust systems
	Intake system components	Intake system components; Air cleaners; Carburetor air cleaners; EFI air cleaners; Intake manifolds; Intake air heating; Volumetric efficiency; Forced induction
	Exhaust system components	Exhaust system components; Exhaust manifold; Exhaust pipe; Extractors; Mufflers; Catalytic converters; Flexible connections; Ceramic coatings; Electronic mufflers; Thermal expansion; Superchargers; Intercoolers; Frequency; Back-pressure
	Intake system procedure	Checking & changing an air filter

Alternate Fuel Systems	Alternate technology	Biodiesel fuel; Vehicle emissions standards
	Fuel & battery technology	Alternative fuels; Fuel cells; Electric motors; Biodiesel

Gasoline Fuel Systems	Gasoline fuel system principles	Gasoline fuel; Gasoline fuel characteristics; Controlling fuel burn; Stoichiometric ratio; Air density; Fuel supply system; Pressure & vacuum
	Carburetor operation	Carburation; Carburetor system components; Carburetor systems; Metering jets; Accelerating; Carburetor barrels
	Carbureted system components	The carburetor; Mechanical fuel pumps; Electric fuel pumps; Tanks & lines; Fuel lines; Charcoal canister; Carburetor filters
	EFI fuel supply system - principles	EFI principles; Basic EFI principles; Air supply; Air volume; Multi-point injection systems; Simultaneous injection; Efficient combustion
	EFI fuel supply system - components	Fuel pumps; Fuel filters; Tanks & lines; Fuel lines; Fuel rail; Fuel pressure regulator; Injectors; Tachometric relay; Thermotime switch; EFI sensors; Potentiometer; Auxiliary air valves; Idle speed control devices; Inertia sensors
	Fuel system procedures	Replacing a fuel filter

Diesel Fuel Systems	Diesel fuel systems	Diesel fuel injection; High pressure components; Diesel fuel; Diesel fuel characteristics; Quiet diesel technology; Clean diesel technology
	Diesel fuel system components	Diesel tanks & lines; Diesel fuel filters; Lift pump; Plunger pump; Priming pump; Inline injection pump; Mechanical or pneumatic governors; Distributor-type injection pump; Diesel injectors; Glow plugs; Cummins & Detroit Diesel injection
	Diesel electronic control	Diesel electronic control systems; Common rail diesel injection system; HEUI diesel injection system

EFI Engine Management	EFI operation	Modes of EFI; Electronic fuel injection; Idle speed control systems; Feedback & looping; Cold start systems; Air measurement; Air-flow monitoring; Variable intake manifold system; Electrical functions; EFI wiring diagram
	Electronic control unit - ECU	EFI system ECU; Electronic control unit settings; Engine speed limiting; Malfunction indicator lamp
	EFI sensors	Mass airflow sensor; Manifold absolute pressure sensor; Air vortex sensor; Fuel system sensor; Temperature sensor; Throttle position sensor; Exhaust gas oxygen sensor; Crank angle sensor; Hall effect voltage sensor

Emission Control	Creation of emissions	Sources of emission; Combustion; Combustion chamber design
	Types of emissions	Hydrocarbons; Hydrocarbons in exhaust gases; Oxides of nitrogen; Particulates; Carbon monoxide; Carbon dioxide; Sulfur content in fuels
	Emission control	Evaporation emission control; Catalytic conversion; Closed loop; Regulated emissions; Crankcase emission control; EGR valves; Controlling air-fuel ratios; Charcoal storage devices
	On-board diagnostics	OBD systems; Diagnostic trouble codes; Monitoring emissions
	Emissions procedures	Checking & cleaning a PCV valve; Obtaining & interpreting scan tool data

Topic area	Topic group	Topic