2. Remove the fuel filler cap and carefully inspect for damage and corrosion. The gasket should have an even, full seal imprint. If the gasket is damaged or corroded, replace the cap.
3. Check for cracks in the fuel supply and return lines. Make sure that the connection of the fuel pipes to the ignition system, as well as to the internal fuel filter, are tight.
Warning: before starting work on the elements of the fuel system, it is necessary to relieve the pressure in the system. The pressure reduction procedure is described in chapter 4.
4. Since a number of elements of the fuel system - a tank, fuel supply and return pipelines, for example, are located at the bottom of the car, it is better to check them on a lift. If a lift is not available, raise the vehicle and place it on jack stands.
5. With the vehicle raised and secure, inspect the fuel tank and filler neck for cracks, punctures, or other damage. The junction of the tank and the filler neck should be inspected especially carefully. Sometimes a leak occurs in the rubber filler neck due to loosening or abrasion of the rubber. Inspect the brackets and fasteners for the fuel tank to be sure it is securely attached to the machine
Warning: never, under any circumstances, attempt to repair the fuel tank (apart from replacing rubber parts). A soldering iron or any other open flame can easily cause an explosion of residual fuel vapors in the tank.
6. Carefully check all rubber hoses and metal pipes coming from the tank. Look for loose fittings, frayed hoses, bent tubes, and other damage. Repair or replace damaged areas as needed (chapter 4).
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