Audi 80/90/Coupe

since 1986-1991 release

Repair and operation of the car

Audi 80/90/Coupe
- 1.2. Identification of the car
   1. Maintenance instruction
   1.3. Arrangement of identification plates
   1.4. Dashboard
   - 1.5. Service of the car
      1.5.2. Seasonal change like fuel
      1.5.3. Petrol additives
      1.5.4. The latest news in the field of fuel
      1.5.5. Cowl
      1.5.6. Engine compartment
      + 1.5.7. Engine oil
      1.5.8. Oil filter of the engine
      + 1.5.9. Automatic transmission liquid
      1.5.10. MKPP oil
      1.5.11. Air filter
      1.5.12. Spark plugs
      + 1.5.13. Hydraulic booster of steering and amplifier of the brake system
      + 1.5.14. Brake fluid
      + 1.5.15. Cooling system
      + 1.5.16. Tanks for washers of a windshield and headlights of forward light
      1.5.17. Sprayers
      1.5.18. Brushes of screen wipers
      + 1.5.19. Tires / wheels
   + 1.6. Independent service of the car
   + 1.7. Specifications
   1.8. Capacities
   1.9. Sizes
   1.10. Loadings
   1.11. Schedule of preventive servicing / lubricant of the car
+ 2. Engines, carburetors
3. Lubrication system
+ 4. Cooling system
+ 5. Fuel system
+ 6. Exhaust system
+ 7. System of ignition
+ 8. Transmission
+ 9. Suspension brackets, wheels
+ 10. Brake system
+ 11. Steering
+ 12. Body, salon
+ 13. Air conditioning system
+ 14. Electric equipment

1.5. Service of the car

1.5.1. Fuel tank


The mouth of filling of fuel is located behind on the right side of the car and closed by the gate. The gate becomes isolated and unlocked through system of the central lock of the car. If the central lock fails, the gate can be opened manually.

Open the gate, as shown in an illustration.

When closing a mouth with a cover, turn it clockwise against the stop.

For prevention of leak or evaporation of fuel from the fuel tank, always densely close a cover.

During filling the car, the cover of a jellied mouth can be fixed on the gate, as shown in an illustration.

In order to avoid problems when filling the car, you watch that the filling gun was installed correctly.

Always insert the filling gun up to the end into a mouth of the fuel tank in order that the valve which is closed by means of a spring located opened is slightly lower than the upper edge of a jellied mouth. Check that the filling gun was inserted into a mouth under the correct corner.

Do not fill in fuel too quickly as in this case foam which will force to be disconnected the filling gun even before full filling of the fuel tank can be formed.

After the filling gun is switched-off automatically for the first time, it means that the fuel tank is filled completely. Do not try to add still fuels as in this case the additional space in the fuel tank will be filled that can lead to overflow of a tank and leak of fuel when it heats up.