Hi, Currently I am having a serious issue with the engine which is 1Y. It keeps putting pressure in the coolant and star doing this by even at temperature of 70 degrees. After it will heat up and end up throwing the coolant out . I am suspecting that the cylinder head is cracked or damaged. I already did these following:

- Radiator Flush
- Replaced Head Gasket
- New Water Pump Installed
- Checked the fan that works even its switches

Can someone conclude that the cylinder head is the problem? Or is there any tests that I can verify this? Thanks and any help will be apprciated .