Removal and installation the throttle body — petrol models (Opel Corsa B)

Remember that gasoline is a highly flammable liquid! When working with fuel system components, observe all accepted fire safety measures. Do not smoke! Do not approach the work site with an open flame or an unprotected portable lamp! Do not service the system in rooms equipped with heating devices operating on natural gas and equipped with a pilot torch (such as water heaters and clothes dryers). Do not forget that gasoline is a carcinogen, i.e., a substance that promotes the development of cancer! Try to avoid fuel coming into contact with exposed areas of the body - use rubber protective gloves, in case of accidental unexpected contact with fuel, wash your hands thoroughly with warm water and soap. Immediately collect spilled fuel and do not store fuel-soaked rags near open flames. Remember that the fuel system of models equipped with fuel injection is constantly under pressure. Before disconnecting the fuel lines, release the residual pressure in the system. When servicing fuel system components, wear protective glasses. Always keep a class B fire extinguisher at hand!

The following describes the procedures for removing and installing the throttle body on 1.2 and 1.4 L engines with 45 and 60 hp respectively.

Throttle Body Assembly Components

Removal

1. Relieve fuel pressure in the system.

2. Disconnect the negative cable from the battery.

3. Disconnect the ventilation hose from the pre-chamber.

4. Disconnect the vacuum hose from the rear of the throttle body, at the pre-chamber.

5. Remove the pre-chamber using a Phillips screwdriver and move the air hose aside (see section Removal and installation air intake tract components).

6. Mark all throttle body connectors with tape and disconnect them.

7. Mark the fuel lines with tape and disconnect them from the fittings, cutting off the clamps if necessary.

First, place a rag underneath and wipe away any leaking fuel.

8. Use a screwdriver to pry the drive rod away from the throttle lever. First remove the locking pin.

Pushing the drive rod



9. Remove the two nuts securing the throttle body and the two bolts securing its upper part.

Throttle Body Upper Part Fastener



10. Remove the top part. Remove any remaining sealant and clean the mating surfaces.

Installation

1. Install the top part with a new gasket.

2. Lubricate the threads of the bolts and nuts with a hardening sealant, for example, OPEL-15 10 177.

3. Tighten the throttle body mounting nuts with force 22 Nm and the bolts securing its upper part with force 6 Nm.

4. Further installation is carried out in the reverse order of dismantling the components. Tighten the pre-chamber fasteners with force 4 Nm.

5. Start the engine and check the fittings for leaks.