Checking Radiator Cap

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 To Open It

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