JEM1IRL

My em1 gets starts overheating and starts leaking coolant from the oil cooler hose up above the oil filter, there seems to be alot of pressure in the cooling system and radiator hoses, the coolant is boiling, I just done the head gasket and water pump. I'm trying to figure out is it boiling and over heating over the leak in the pipe (alot of coolant leaks) or is it leaking because the pressure in the system The pipe on top

D21X

1. Did you bleed the coolant system? If not do a search and you will find out how.
2. What head gasket did you use? Some brands are crap. I always use OEM.
3. Did you install it correctly? I believe there is a top and bottom.
4. How is your thermostat? Did you replace that?

mk378

Engine cold, take radiator cap off start the engine and rev it. If there is a lot of bubbling or stuff blowing out, the head gasket is blown.

If that is OK, attach a pressure tester, pressurize to the normal operating pressure of 15 psi, then find and repair all leaks.