Warning! Do not forget that gasoline is a highly flammable liquid! Observe all applicable fire safety precautions when servicing power system components. Do not smoke, do not approach the work area with an open flame or an unprotected carrier. Do not service the system in a room equipped with natural gas-fired, pilot flame-equipped heaters (such as water heaters and clothes dryers). Do not forget that gasoline is one of the carcinogens that contribute to the development of cancer, try not to let the fuel get on open areas of the body, use protective rubber gloves. In case of accidental contact, wash hands thoroughly with soap and warm water. Clean up spilled fuel immediately and do not store fuel-soaked rags near open flames. Remember that the fuel injection system is constantly under pressure. Relieve any residual pressure before disconnecting fuel lines (see chapter Power supply and exhaust systems). Wear safety goggles when servicing power system components. Keep a class B fire extinguisher handy at all times!
1. It is easiest to check the condition of the components of the power system on a car raised above the ground, use a winch / lift, or drive the car onto a flyover / viewing hole.
2. If the smell of gasoline appears in the car interior while driving or after a long parking in direct sunlight, a thorough inspection of all components of the power system should be carried out without delay.
3. Remove the fuel filler cap and check it for damage and corrosion. Along the entire perimeter of the sealing gasket there should be a continuous trace of its tight pressing to the tank neck. If any defects are found, replace the gasket.
4. Check the fuel tank and its filler neck for punctures, cracks or other damage. Pay special attention to inspecting the junction of the neck with the tank. Sometimes the rubber of the neck begins to leak fuel due to the loosening of the mounting clamps, or as a result of aging of the material. Assess the reliability of the tank mounting. Only those of the possible problems are listed here, the diagnosis and elimination of the causes of which lies within the qualifications of the average amateur mechanic.
Attention! Never attempt to repair the fuel tank yourself (except for replacing its rubber components) – contact of residual fuel vapors contained even in a thoroughly ventilated tank with a gas burner torch or any other source of open flame can cause them to detonate!
5. Carefully inspect all rubber hoses and metal tubes of the fuel lines coming from the gas tank. Check the condition of the tube/hose material and the tightness of all fittings. Also check the fuel lines leading to the fuel injection system. Make necessary repairs, replace defective components (see chapter Power supply and exhaust systems).
6. Evaporative Emission Control System Components Another Source of Gasoline Smell (EVAP) (see chapter Engine management and emission control systems).