What is a common method for cleaning fuel injectors?

Using a fuel injector cleaning kit is a common and effective method for cleaning fuel injectors. These kits typically utilize a specialized cleaning solvent designed to dissolve carbon deposits and other contaminants that can accumulate on the injectors over time. The process involves disconnecting the fuel injectors from the fuel rail, and then connecting them to the cleaning kit, which allows the cleaning solution to be circulated through the injectors under controlled pressure. This thorough cleaning helps restore proper fuel flow and spray patterns, improving engine performance and efficiency.

The other methods mentioned are not suitable for effectively cleaning fuel injectors. High-pressure washers may damage sensitive engine components and do not target the specific buildup within the injectors. Adding water to the fuel tank can lead to severe engine issues, as water can cause hydrolock or fuel contamination, and does not address the injector cleaning. Changing the oil is important for engine maintenance but does not clean fuel injectors directly.