Valve - vacuum activation - secondary air injection (SAI)

EMISSION CONTROL - V8

REPAIRS

17-2-5

Valve - vacuum activation - secondary air 
injection (SAI)

$% 17.25.02 

This procedure is also applicable to the gasket.

Before disconnecting the battery, ensure all text and 
cautions in the battery disconnection section are 
observed. 
 

 + 

 GENERAL INFORMATION, Electrical 

Precautions.

Remove

1. Position vehicle on lift.
2. Disconnect battery earth lead.
3. Remove air intake hose.

 

 + 

 ENGINE MANAGEMENT SYSTEM - 

V8, REPAIRS, Hose - air flow meter to 
throttle body.

4. Drain cooling system.

 

 + 

 COOLING SYSTEM - V8, 

ADJUSTMENTS, Coolant - drain, flush & 
refill.

5. Release clip, disconnect radiator bottom hose 

from thermostat housing and remove bolt 
securing 'P' clip.

6. Disconnect vacuum pipe and pressure pipe 

from vacuum activation valve. 

7. Remove 2 nuts, remove vacuum activation 

valve and discard gasket.

Refit

1. Clean SAI pipe and vacuum activation valve 

mating faces.

2. Fit new gasket to SAI pipe.
3. Fit vacuum activation valve to SAI pipe. Fit and 

tighten 2 nuts.

4. Fit vacuum pipe and pressure pipe to vacuum 

activation valve.

5. Connect radiator bottom hose to thermostat 

housing and secure with clip.

6. Fill cooling system.

 

 + 

 COOLING SYSTEM - V8, 

ADJUSTMENTS, Coolant - drain, flush & 
refill.

7. Connect air intake hose.

 

 + 

 ENGINE MANAGEMENT SYSTEM - 

V8, REPAIRS, Hose - air flow meter to 
throttle body.

8. Connect battery earth lead.