SECTION 6E1 - EMISSION CONTROL - V6 ENGINE

IMPORTANT

Before p erforming any Serv ice Operation or other procedu re described in this Section , refer to Section

00 CAUTIONS AND NOTES for correct workshop practices with regard to safety and/or property

damage.

1. GENERAL I NFORMATI ON

All information relating to the emission control system for VX Series models carries over from the information

published for VT Series I and II models, noting the following:

1. A new evaporative emission control canister, with a different carbon grade is used on VX Series vehicles. The

new evaporative emission control canister will service back to earlier build, ‘V’ series vehicles.

2. Introduced with the VX Series models, the purging location for the PCV valve was changed by providing a

channel (A) in the lower inlet m anifold ( 9), with the outlet located directly behind the throttle valve opening. This

provides a more even distribution of crankcase fumes, thereby improving spark plug reliability and a reduction

in emissions.

W hile ther e is no spec ific servic ing requirement f or the PCV valve (11), apart f rom a f unction check , whenever

the upper inlet m anifold is s eparated from the lower half, then the PCV valve pas sage (A) in the lower manifold

(9) should be cleaned to avoid any possibility of the passage becoming clogged with condensed engine oil

fumes.

Legend

1. Upper Inlet Manifold Cover 6. Fuel injector and Rail Assembly 11. PCV Valve

2. Upper inlet Manifold gasket 7. Thermostat Housing & Bleeder 12. PCV Valve O-Ring Seal

3. Upper Inlet Manifold 8. Thermostat 13. Oil Separation Baffle

4. Throttle Body Gasket 9. Lower Inlet Manifold 14. Upper to Lower Inlet Manifold Gasket

5. Throttle Body 10. Spring – PCV Valve

Figure 6E1-1

3. Changes have been made to the emission control label affixed to the radiator upper shroud, that reflect

changes to spark plug recommendations.

Figure 6E-2 – V6 Naturally Aspirated Engine

Figure 6E-3 – V6 Supercharged Engine

While none of these changes have an effect on the operation or the service procedures, reference to the latest

Holden spare parts information should be made before replacing components

For all other information relating to the Emission Control System used on VX Series Models with a V6 or the V6

Supercharged engine, refer to 6E1 EMISSIO N CONTROL – V6 ENGINE f or VT Series I and VT Series II models,

in the Service Information.

NOTE: All information on the emission control system should be read in conjunction with each other.