im gonna fail

Float bowl

Bottom chamber of carburetor that stores fuel

Float

Floating component inside bowl that maintains fuel level

Float needle valve

Opens and closes to control fuel entering the bowl

Main jet

Controls fuel flow at high throttle

Pilot jet

Controls fuel at idle and low throttle

Jet needle

Controls fuel in mid throttle range

Venturi

Narrow passage that speeds airflow and pulls fuel in

Throttle valve

Controls how much air enters the engine

Choke

Adds extra fuel for cold starting

Carburetor

Mixes air and fuel using airflow (mechanical, no wires)

Fuel injector

Electronic component that sprays fuel into the engine

Electrical connector

Top plug with 2 wires (volt and signal)

Injector body

Main metal housing of the injector

Nozzle

Tip of injector that sprays and atomizes fuel

Pintle valve

Internal needle that opens and closes fuel flow

Return spring

Closes the injector when no signal is applied

Fuel rail

Connection point where pressurized fuel enters injector

Fuel pump

Supplies pressurized fuel to the injector

ECU

Controls injector timing and fuel amount

Fuel injection system

Electronic system that delivers fuel using sensors and ECU