Inspection After Removal

WARNING: This page is about a different car, the 2020 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.

Visual Inspection

Check for correct installation, damage and deterioration of the vacuum hoses and pipe.

Valve Air-tightness Check

Connect a suitable tool at each end of the vacuum hose to inspect the check valve operation.

Vacuum applied at booster end	: Refer to Check Valve .
Vacuum applied at intake manifold end	: Refer to Check Valve .

Replace the vacuum hose with check valve if out of specification.