Checking Radiator Cap

Fig 1: Checking Valve Seat Of Radiator Cap

Courtesy of SUZUKI OF AMERICA CORP.

• Replace the cap if the metal plunger cannot be seen around the edge of the black rubber gasket.
• Replace the cap if deposits of waxy residue or other foreign material are on the black rubber gasket or the metal retainer.

Fig 2: Pulling Negative-Pressure Valve To Open It

Courtesy of SUZUKI OF AMERICA CORP.

• Check that there is no dirt or damage on the valve seat of the radiator cap negative-pressure valve.
• Make sure that the valve operates properly while opening and closing.

Fig 3: Checking Reservoir Cap Relief Pressure Using Tool

Courtesy of SUZUKI OF AMERICA CORP.

Tool number: EG17650301 (J-33984-A) 

Standard: 98 - 118 kPa (0.99 - 1.20 kg/cm ²  , 14 - 17 psi) 

• When connecting the radiator cap to the tester, apply water or coolant to the cap seal surface.
• Replace radiator cap if there is an abnormality in the negative-pressure valve, or if the open-valve pressure is outside of the standard values.