AIS8 - Check For Vacuum Leaks

^ Inspect the entire inlet air system from the Mass Air Flow (MAF) sensor to the intake manifold for leaks such as:

- Cracked or punctured outlet air tube or air cleaner housing assembly.

- Loose connections on the inlet air tube at the air cleaner housing or throttle body.

- Idle Air Control (IAC) valve assembly or gasket seal.

- Intake manifold assembly or gasket seal.

- EGR valve diaphragm or control solenoid.

- EGR valve gasket seal leak to intake manifold.

- Vacuum supply connectors and hose.

- PCV connectors and hose.

^ Are any leaks detected In the above areas?

YES -- Service as necessary.

NO -- Go to AIS9. AIS9 - Check Idle RPM