Fig. 4.1. Location of fuel system components
1. Fuel pump; 2. Hose; 3. Carburetor; 4. Return fuel hose; 5. Fuel tank; 6. Breather hose; 7. Fuel tank filler neck; 8. Ventilation hose; 9. Ventilation hose; 10. Filler hose; 11. Ventilation hose; 12. Fuel supply line; A. Splitter; B. Splitter (to the electronic control unit (EEC)).
The fuel system consists of a fuel tank installed under the bottom (in front of the rear axle), mechanical fuel pump and carburetor (see Fig. 4.1). The fuel pump is driven by an eccentric from the camshaft and is mounted on the cylinder block wall. The air filter assembly contains a replaceable paper filter element. The air intake temperature is thermally controlled.
The models use a Pierburg 2E3 or Jikov 28-30 LEKR carburetor, manufactured under license. In any case, they are identical. To reduce the amount of harmful emissions and improve the overall handling characteristics when the engine is cold, the intake manifold is heated by coolant. Enrichment of the mixture for starting from a cold state is carried out by a thermally controlled automatic air damper.
The exhaust system consists of three parts and is attached to the bottom of the car with rubber hangers.
Warning: Many of the procedures in this Section require the removal of fuel lines and connections, which will usually result in some fuel leakage. Gasoline is extremely dangerous - use extreme caution when working around the fuel system.