Rev Up for 2025: Ace the Red Seal Motorcycle Tech Exam – Zoom into Your Future!

An electronic fuel injection (EFI) system generally provides improved fuel efficiency and reduced emissions compared to a carburetor. This is primarily due to the EFI system's ability to precisely control the air-fuel mixture and adjust it based on real-time data from various sensors. These sensors monitor factors such as engine temperature, air intake, and throttle position, allowing the EFI to optimize combustion for efficiency and performance. This ensures that the engine runs at its most effective air-fuel ratio under different conditions, leading to more complete combustion. As a result, less unburned fuel is expelled through the exhaust, which translates to lower emissions.

While a carburetor can be simpler and often less expensive to manufacture and install, it cannot match EFI systems in terms of accuracy and adaptability. Carburetors rely on fixed jets and mechanical adjustments, which can lead to less optimal fuel mixtures and, consequently, higher emissions and lower fuel efficiency under varying operating conditions.