1. Inspect the fuel line connections to the fuel filter...
2.... and the fuel rail, as well as the connection of the injectors with the fuel rail (To do this, remove the air filter). If fuel leakage is detected, replace the O-rings of the injectors or hose ends.
3. Examine fuel lines and their fastenings to the bottom of a body. Replace damaged fuel lines if cracked, frayed, or leaking fuel is found. Replace damaged fasteners.