Engine Tune – V6 Supercharged Engine Page 6F2–1

Page 6F2–1

Section 6F2

Engine Tune – V6 Supercharged Engi ne

ATTENTION

Before performing any service operation or other procedure described in this Section, refer to Section 00

Warnings, Cautions and Notes for correct workshop practices with regard to safety and/or property damage.

1 General Information............................................................................................................................... 2

1.1 Vehicle Emission Control Information .................................................................................................................2

2 Engine Tune Recommendations.......................................................................................................... 3

2.1 Engine Tune Recommendation Chart ..................................................................................................................3

3 Engine Tuning Data............................................................................................................................... 4

3.1 Engine Tuning Data Chart .....................................................................................................................................4

3.2 Tuning Service Notes.............................................................................................................................................5

3.3 Cylinder Balance Check ........................................................................................................................................6

Engine Tune – V6 Supercharged Engine Page 6F2–2

Page 6F2–2

1 General Information

With the following exceptions, MY 2004 VY and V2 Series V6 Supercharged Engine Tune information carry over from

MY 2003 VY and V2 Series vehicles:

• a new vehicle emission control label has been introduced,

• engine tune recommendation chart, and

• engine tuning data chart.

For V6 supercharged engine tune information not provided in this Section, refer to Section 6F2 Engine Tune – V6

Supercharged Engine in the MY 2003 VY and V2 Series Service Information.

1.1 Vehicle Emission Control Information

Engine tune specifications necessary to achieve the correct

emission levels are located on the vehicle emission control

information label (1), located in the engine compartment on

the grain free area of the radiator shroud. Refer to the label

before adjusting the engine.

To maintain the performance and emission control levels

specified for the vehicle, it is necessary for regular

maintenance to be performed in accordance with the

schedule set out in the VY Series Owner's Handbook.

Figure 6F2 – 1

For vehicles produced before 2004, the vehicle emission control information label carries over from MY 2003 VY Series

vehicles. Refer to Section 6E2 Emission Control – V6 Supercharged Engine in the MY 2003 VY and V2 Series Service

Information.

For vehicles produced from the start of 2004, a new vehicle emission control information label is introduced, refer to

Figure 6F2 – 2.

Figure 6F2 – 2

Engine Tune – V6 Supercharged Engine Page 6F2–3

Page 6F2–3

2 Engine Tune Recommendations

2.1 Engine Tune Recommendation Chart

The following engine tune recommendation chart lists the items that require attention when tuning the engine. Cross-

references to the appropriate section in the MY 2004 VY and V2 Series Service Information are also provided.

There is no provision for ignition timing, idle speed and idle mixture adjustments on MY 2004 VY Series models with a V6

supercharged engine, refer to Section 6C2 Powertrain Management – V6 Supercharged Engine in the MY 2004 VY and

V2 Series Service Information.

NOTE

The use of unleaded petrol will result in black tail

pipe deposits rather than the familiar grey colour.

Therefore, the black colour does not indicate a

poor state of engine tune.

Engine Tune Recommendations Service Information

Reference Section

Engine Compression Test.

Section 6A2 Engine Mechanical – V6

Supercharged Engine.

Also refer to 3.2 Tuning Service Notes in this

Section.

Engine Drive Belt Check. Section 6A2 Engine Mechanical – V6

Supercharged Engine.

Cooling System Check for Leaks. Section 6B2 Engine Cooling – V6 Supercharged

Engine.

Valve Lash Adjustment Non-Adjustable (Hydraulic

Lifters).

Idle Speed Non-Adjustable.

Idle Mixture Non-Adjustable.

Air Cleaner Check or Replace, Test for

Leaks. Section 6C2 Powertrain Management – V6

Supercharged Engine.

Fuel Filter Check and Replace. Section 6C2– V6 Supercharged Engine.

Spark Plugs Clean, Adjust or Replace. Section 6C2 Powertrain Management – V6

Supercharged Engine.

Spark Plug Leads Test for Continuity. Section 6C2 Powertrain Management – V6

Supercharged Engine.

Ignition Timing Non-Adjustable.

Exhaust System Check for Excessive Back

Pressure, General Condition

and Oxygen Sensor Operation.

Section 8B Exhaust System.

Section 6C2 Powertrain Management – V6

Supercharged Engine.

Engine Ventilation Check. Section 6E2 Emission Control – V6 Supercharged

Engine.

Evaporative Emission

Control Check Lines, Hoses and

Canister. Section 6E2 Emission Control – V6 Supercharged

Engine.

Battery and Cables Check. Section 12A Battery and Cables.

Engine Tune – V6 Supercharged Engine Page 6F2–4

Page 6F2–4

3 Engine Tuning D ata

3.1 Engine Tuning Data Chart

For vehicles produced before 2004, the engine tuning data chart carries over from MY 2003 VY Series vehicles. Refer to

Section 6F2 Engine Tune – V6 Supercharged Engine in the MY 2003 VY and V2 Series Service Information.

The following table is applicable to vehicles produced from the start of 2004 and provides condensed engine tuning data.

SPARK PLUGS

ENGINE TYPE TRANSMISSION IDLE SPEED

(RPM) IGNITION

TIMING TYPE GAP (mm)

800 ± 50

(In Neutral)

3.8 Litre P.F.I.

Supercharged

Automatic

Transmission 800 ± 50

(In Drive)

PCM Controlled

(Non –

Adjustable)

NGK

BPR6EFS-13 1.3 mm

+0.0 / -0.1mm

NOTE

Idle speed is controlled by the PCM and varies

with:

• Battery voltage

• Engine temperature

• Air conditioning usage

• Park/Neutral Switch Signal

Engine Tune – V6 Supercharged Engine Page 6F2–5

Page 6F2–5

3.2 Tuning Service Notes

The tuning service notes carry over from MY 2003 VY Series vehicles. Refer to Section 6F2 Engine Tune – V6

Supercharged Engine in the MY 2003 VY and V2 Series Service Information.

For compression testing procedure and specifications, refer to Section 6A2 Engine Mechanical – V6 Supercharged

Engine.

Engine Tune – V6 Supercharged Engine Page 6F2–6

Page 6F2–6

3.3 Cylinder Balance Check

The cylinder balance check carries over from MY 2003 VY Series vehicles. Refer to Section 6F2 Engine Tune – V6

Supercharged Engine in the MY 2003 VY and V2 Series Service Information.

For additional diagnostic information, refer to Section 6C2 Powertrain Management – V6 Supercharged Engine.