Ok guys i need help I replaced my head thermostat radiator and cooling fans along with water pump. ever since i put it back together and vacuum filled the coolant i let it run and it wont stay cool and at about 190 the coolant over flows through the resivor and flows out to the ground and if close off the system and let it cool it basically vacuums its self and collapses the hoses. i did a compression test and leak down test on all six cylinders and every thing checked out fine I need help.
P.S. Mishimoto radiator and fan assembly 195 thermostat and oe water pump.

 

you got 6 choices try wrong faulty radiater cap alsos commas and spelchck make your post more readible

 

yeah, radiator cap.