Checking Radiator Cap

WARNING: This page is about a different car, the 2002 Infiniti QX4. However, it is still accessible from the selected car via links, so may be relevant.

To check radiator cap, apply pressure to cap with a tester.

Radiator cap relief pressure:

Standard

78 - 98 kPa

(0.8 -1.0 kg/cm ² , 11-14 psi)

Limit

59 kPa

(0.6 kg/cm ² , 9 psi)

Fig 1: Checking Radiator Cap

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

Pull the negative pressure valve to open it.

Check that it closes completely when released.

Fig 2: Pulling Negative Pressure Valve

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