Airtightness Inspection

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

Use a suitable vacuum pump to check. Connect to brake booster side of check valve.

Check Vacuum decrease should be within 1.3 valve kPa (10 mm Hg, 0.39 in Hg) for 15 seconds
specification: under a vacuum of - 66.7 kPa (- 500 mm Hg, - 19.69 in Hg)

Fig 1: Inspecting Check Valve

Courtesy of NISSAN MOTOR CO., U.S.A.