Component Tests: Cap-Radiator

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

Inspect the radiator cap and seals for damage or deterioration. Install a new radiator cap (8100) if necessary.

Fig 1: Inspecting Radiator Cap
Courtesy of FORD MOTOR CO.
Fit radiator cap to Radiator/Heater Core Pressure Tester Kit using the aftermarket adapter.

Fig 2: Fitting Pressure Tester To Radiator Cap
Courtesy of FORD MOTOR CO.

NOTE: If the plunger of the pressure tester is depressed too fast, an incorrect pressure reading will result.

Fig 3: Pressure Testing Radiator Cap

Courtesy of FORD MOTOR CO.

Slowly pump the pressure tester until the pressure gauge stops increasing and note the highest pressure reading. Release pressure and repeat test. Install a new radiator cap if the pressure is not 99.3-121.4 kPa (14.4-17.6 psi).