See also:

Check Fuel Filler Cap Warning Light
This warning light indicates the fuel filler cap is not tight securely. Always make sure that the fuel filler cap is tight. ...

Lower Vehicle and Tighten Nuts
Lower the car to the ground by turning the wheel nut wrench counterclockwise. Then position the wrench as shown in the drawing and tighten the wheel nuts. Be sure the socket is seated completely ...

Exhaust pipe and muffler
Visually inspect the exhaust pipes, muffler and hangers for cracks, deterioration, or damage. Start the engine and listen carefully for any exhaust gas leakage. Tighten connections or replace part ...