Yes. The 2004 Honda CBR600F4i uses fuel injection via Honda's PGM-FI system.
In the early 2000s, Honda migrated the CBR600F line from traditional carburetors to electronic fuel injection, and the "F4i" designation signaled that fuel-injected configuration. The 2004 model sits within this EFI-equipped generation, delivering improved starting, throttle response, and emissions performance compared with older carbureted versions.
Engine and fuel-system overview
The F4i designation indicates that this model uses Honda's Programmed Fuel Injection (PGM-FI) controlled by an ECU. For the 2004 CBR600F4i, this means four injectors delivering fuel to the engine under computer control, with mappings that adjust for temperature, air density, and engine speed.
Key EFI features found on the 2004 CBR600F4i include:
- PGM-FI electronic fuel injection system managed by a dedicated ECU
- Multi-point injection delivering fuel to each cylinder
- Engine-temperature-based cold-start enrichment and idle control
- Optimized fuel maps for emissions compliance and smooth throttle response
- Diagnostic capability to aid maintenance and troubleshooting
These features collectively improve cold starts, fuel efficiency, and rideability, especially in varying weather and altitude conditions.
Clarifying the model lineage
Earlier CBR600F models used carburetors, while the F4i variants switched to EFI. The 2004 CBR600F4i is part of that EFI-driven generation, aligning with Honda's broader push toward electronic fuel management in the early 2000s.
Summary
Yes — the 2004 CBR 600 F4i is fuel injected. It uses Honda's PGM-FI system with multi-point fuel injection and an ECU-based map to deliver reliable starting, smooth power delivery, and better emissions performance compared with carbureted predecessors.