Radiator Cap: Testing and Inspection

Radiator Cap Test

1. Remove the radiator cap (A), wet the seal with engine coolant, then install it on the pressure tester (B) (commercially available).





2. Apply a pressure of 93-123 kPa (0.95-1.25 kgf/cm2, 13.5-18 psi)

3. Check for a drop in pressure.

4. If the pressure drops, replace the cap.