Check Valve: Inspection: Procedure

INSPECT CHECK VALVE

Airflow Inspection

Remove the vacuum hose.
Refer to REMOVAL

Blow air into the vacuum hose using your mouth from the vacuum pump side and verify that the air flows to the intake manifold side, then blow air from the intake manifold side and verify that the air does not flow to the vacuum pump side.

If there is any malfunction in the check valve, replace it with the vacuum hose as a single unit.

*a	Intake Manifold Side
*b	Check Valve
*c	Vacuum Pump Side

Refer to REMOVAL