Warning! Do not forget that gasoline is a highly flammable liquid - when working with components of the power system, follow all fire safety precautions. Do not smoke or approach the work area with an open flame or an uncovered 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 carcinogenic substances that contribute to the development of cancer - try to avoid getting fuel on open areas of the body - use protective rubber gloves, in case of accidental unforeseen contact, wash your hands thoroughly with warm water and soap. Clean up spilled fuel immediately and do not store fuel-soaked rags near open flames. Remember that the fuel injection system of models equipped with fuel injection is constantly under pressure. Relieve any residual pressure in the system before disconnecting fuel lines (see chapter Power and exhaust systems). Wear safety goggles when servicing power system components. Keep a class B fire extinguisher handy at all times!
1. If the smell of gasoline appears in the car interior while driving or after a long parking in the open sun, you should immediately carefully inspect all components of the power system.
2. Remove the fuel filler cap and check it for damage and corrosion. Along the entire perimeter of the gasket, there should be a continuous trace of tightly pressing it to the tank neck. If any defects are found, replace the gasket/cover.
3. Check the fuel supply and return lines for cracks, cuts or other damage. Check the tightness of the fitting connections of the metal lines and the fuel hose clamps.
Attention! All models covered in this manual are equipped with a fuel injection system, and therefore, before disconnecting the fuel lines or removing any components, it is necessary to relieve residual pressure in the system (see chapter Power and exhaust systems).
4. If possible, inspect the injection injectors for evidence of fuel leaks. Replace damaged O-rings if necessary (see chapter Power and exhaust systems).
5. Since many of the components of the power system - such as the fuel tank and part of the gas lines - are located under the car, to check their condition, you should raise the vehicle by hanging it on a winch, driving it onto a flyover, or placing it on props. Make sure the car is securely fixed in the raised position.
6. 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 neck rubber begins to leak fuel due to loosening of the mounting clamps, or as a result of aging of the material (see accompanying illustration). 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!
7. Carefully inspect all rubber hoses and metal fuel lines coming from the gas tank (see accompanying illustration). 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 and exhaust systems). 8. Components of the fuel vapor control system can also be a source of gasoline odor. The task of the system is to remove fuel vapors from the gas tank to the carbon adsorber, in which they accumulate while the car is parked, and from where, after starting the engine, they are discharged into the intake pipeline for the purpose of burning in the combustion chambers.
9. The surest symptom of a malfunction in the evaporative emission control system is the appearance of a strong smell of gasoline in the engine compartment. Check the condition of the carbon adsorber located in the compartment and the hoses connected to it (see accompanying illustration).