IA11 - Shutter Valve Vacuum Reservoir Leakage

^ Remove the shutter valve vacuum reservoir from the engine.

^ Plug or cap the nipple leading to the intake manifold.

^ Connect Rotunda Vacuum Tester 021-00037 or equivalent to the nipple leading to the High Speed Inlet Air (HSIA) control solenoid. Apply 508 mm-Hg (20 in-Hg) of vacuum to the reservoir.

^ Verify whether the reservoir and its check valve hold vacuum.

^ Does the vacuum reservoir and the check valve hold vacuum?


YES -- Go to IA12. IA12 - High Speed Inlet Air (HSIA) Control Solenoid

NO -- Replace the vacuum reservoir.