Open the hood and locate the engine
Find the intake manifold or cylinder head
Look for a fuel rail running along the engine
Identify small injector bodies attached to the fuel rail
Trace the fuel lines to the fuel rail
Check near each intake port for individual injectors
Consult the vehicle service manual for the exact location
Use the engine diagram on the hood label if available
Inspect around the throttle body on older systems
Look under the intake manifold on some engines