Toyota Corolla

1992-1998 of release

Repair and operation of the car

Toyota Corolla
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engines
+ 4. Cooling systems, heating
- 5. Fuel, exhaust systems
   5.1. Specifications
   5.2. Order of performance of a decompression of fuel system
   5.3. Fuel pump and pressure of fuel
   5.4. Removal and installation of the fuel pump
   5.5. Fuel level sensor
   5.6. Fuel pipes and joints
   5.7. Fuel tank
   5.8. Cleaning and repair of a fuel tank
   5.9. Air filter
   5.10. Cable of the drive of a butterfly valve
   5.11. System of electronic injection of fuel (EFI - system)
   5.12. Check and replacement of EFI units - systems
   5.13. Service of an exhaust system
+ 6. System of decrease in toxicity
+ 7. Transmissions
+ 8. Coupling and half shafts
+ 9. Brake system
+ 10. Suspension bracket and steering
+ 11. Body
+ 12. Electric equipment

5. Fuel, exhaust systems


Are a part of fuel system:

      – fuel tank;
      – the electric fuel pump (it is mounted in a fuel tank);
      – main relay of system of injection and relay of the fuel pump;
      – nozzles;
      – fuel pressure regulator;
      – air filter;
      – chamber of a butterfly valve.

All cars considered in this manual are equipped with system of direct injection of fuel with electronic control (MPFI system).

System of direct injection of fuel (MPFI – system)

The system of direct injection of fuel provides consecutive supply of fuel in engine cylinders under the influence of the operating impulses synchronized with the moment of opening of inlet valves. Management of injection is provided by means of the electronic control unit (ESM block). The electronic control unit traces various parameters of the engine and provides an exact dosage of the fuel injected in strict sequence into inlet channels of cylinders. The butterfly valve is intended only for regulation of amount of the air given to cylinders. As nozzles of cylinders are screwed in close proximity to inlet valves, more exact control of a ratio of gasoline and air in gas mixture is provided

Fuel pump and highway of supply of fuel

Fuel is selected from a tank, moves in system of injection and comes back in a tank via two metal pipelines mounted under the body bottom. The electric fuel pump is mounted together with the fuel level sensor in a tank. Vapors of gasoline and heated gasoline come back to a tank on the certain highway.

The fuel pump turns on at a stage of start-up of the engine a starter or right after start of the engine. During start-up and operation of the engine on the control unit reperny impulses from the block of electronic ignition arrive (see subsection 3.3.8). The fuel pump is switched-off later 2–3 sec. after the termination of receipt of reperny impulses.

System of production of exhaust gases

The system of production of exhaust gases consists of the final collector equipped with the sensor of oxygen, catalytic converter, exhaust pipes and the muffler.

Catalytic converter belongs to system of purification of exhaust gases and is built in in an exhaust pipe for the purpose of decrease in toxicity of emissions in the atmosphere.

One-stage converter in combination with the three-component recovery catalyst is a part of converter. More detailed description of catalytic converter is provided in subsection 1.5.51.