What should be done if a fuel injector is found to be leaking?

When a fuel injector is found to be leaking, it indicates a failure in its sealing or function that could lead to a variety of operational issues such as engine misfires, poor fuel efficiency, or even damage to other engine components due to excess fuel.

Replacing the fuel injector is necessary because a leak can compromise the fuel delivery system and result in improper combustion. This not only affects performance but can also lead to increased emissions and potential harm to the engine over time. A new injector ensures that the engine receives the correct amount of fuel, maintaining optimal performance and preventing further issues.

The other options, while they may seem relevant to engine maintenance, do not address the core problem of a leaking injector. Cleaning the injector or replacing the fuel filter may help with fuel flow and performance, but they do not resolve the leak itself. Continuing to use a leaking injector, even at lower power, risks compounding issues and can lead to more significant engine damage. Thus, the safest and most effective course of action when an injector is found leaking is to replace it.