Order of execution
1. Wait until the radiator has cooled down to 38°C, remove the radiator cap and connect a cooling system leak tester instead.
2. Pressurize 139.3 kPa in the cooling system.
3. Make sure that the pressure of 139.3 kPa in the cooling system is maintained for 2 minutes.
Warning! Do not remove the radiator cap when the engine is hot, as escaping vapors can cause severe burns.
Warning! Close the radiator cap with a thick rag and slowly unscrew the cap until the escaping steam hisses.
Warning! After the steam stops escaping, slowly unscrew and remove the cap from the radiator.
4. Otherwise, locate the leak and fix it.