Warning: Gasoline is highly flammable, so special precautions should be taken when working with any components of the fuel system. Do not smoke, and do not approach the work site with an open fire or an unprotected lampshade carrier. Do not perform such work in garages equipped with natural gas heating appliances (such as water heaters, dryers, etc.). The work area must be well ventilated. If gasoline comes into contact with your skin, wash it off immediately with soap and water. Wear safety glasses and keep a fire extinguisher handy when doing any work on the fuel system. If gasoline spills, wipe up the puddle immediately, but do not keep gasoline-soaked rags in places where they can spontaneously ignite.
1. If you smell gasoline while driving or after the car has been standing in the sun, you must immediately check the condition of the entire fuel system.
2. Remove the fuel tank cap and check it for damage and corrosion. The sealing gasket on the cap should be intact. If there is damage or corrosion, replace the cap.
3. Inspect the fuel system inlet and return lines for cracks. Make sure that the connections between the fuel system lines and the fuel injection system, and between the fuel system lines and the built-in fuel filter are not loose.
Warning: On vehicles equipped with fuel injection, the system pressure must be relieved before servicing the fuel hoses. Refer to Chapter Fuel, exhaust and emission control systems.
4. Since some fuel system components - such as the fuel tank and some fuel system lines - are located underneath the vehicle, they are easier to inspect when the vehicle is jacked up. If this is not possible, jack up the vehicle and support it on jack stands.
5. With the vehicle raised, inspect the fuel tank and filler neck for holes, cracks, and other damage. Pay particular attention to the condition of the connection between the filler neck and the tank. Sometimes fuel leaks occur due to loosening of the clamps securing the rubber neck or due to damage to the material of the neck. Inspect all brackets and straps securing the fuel tank to make sure it is securely fastened to the vehicle.
Warning: Never, under any circumstances, attempt to repair the fuel tank (excluding the replacement of its rubber components). A welding flame or any other open flame can easily cause the gasoline vapor inside the tank to explode.
6. Carefully inspect all fuel hoses and metal lines coming from the tank for loose connections, twists, signs of wear on hose materials, and other damage. Repair or replace damaged sections as necessary.