A few things, posted by Ice95z on March 24, 2010 at 02:58 PM
Message
:Do you have all water in the system? The water gets hot, expands, evaporates and causes steam and air pockets to form. Air pockets cause the hoses to expand and over pressurizes the system. If you cannot find any leaks chances are there is air in the system somewhere. ---------------------------------------------------------------------
I asked mechanic about this and he said he bled the system properly.