Warning: Observe the following precautions when inspecting or servicing fuel system components. Work in a well ventilated area and keep the work area free of open flames (cigarettes, matches, etc.) or electric lamps (they can burst, causing the fumes to ignite). Wipe up spilled fuel immediately and do not store fuel-soaked rags where they could ignite.
1. The fuel system is normally under slight pressure, so if fuel lines need to be disconnected, be prepared for fuel to come out of the ends. Seal any disconnected fuel lines to prevent loss of fuel.
2. It is most convenient to service the fuel system by lifting the car on a winch.
3. If you smell gasoline while driving or after the car has stood in the sun, immediately carefully inspect the system.
4. Remove the fuel filler cap and inspect its gasket for damage and corrosion (photo). Replace cover if necessary.
Given the complexity of modern emission systems, the seal must be checked regularly (arrow) fuel tank caps
5. Inspect the Fuel tank and filler neck for holes, cracks or other damage. Inspect the connection between the filler neck and the tank especially carefully. Sometimes fuel leaks due to loose rubber filler clamps or worn rubber. The motorist can usually fix these malfunctions on their own.
Under no circumstances should you attempt to repair the fuel tank yourself (except rubber components), if you don't have enough experience. A welding torch or similar equipment will easily cause fuel vapor explosions if proper precautions are not taken.
6. Carefully check all rubber hoses and metal tubes coming from the fuel tank. Check the reliability of their fastening, the condition of the tubes and hoses and whether they are kinked. Trace the fuel lines to the front of the vehicle, carefully inspecting them all the way. Repair or replace damaged components as needed.
7. If the smell of fuel is still noticeable after inspection, follow the Chapter 33.