Intermittent overheating

DrtyRat

Member
So I have been having some weird problems lately with random overheating. It seems every 2-3wks my car overheats/gets hot. When I check the radiator the water is low, then I fill it and its fine for a while, then it happens again. Every time I refill it, I am parked on an incline and I massage the radiator hose to ensure that I get all of the air out. I have no leaks that I'm aware of(I don't see/hear anything as far as water coming out), and my cooling system was completely redone a little over 1 year ago(mishimoto radiator, mishimoto fans w/shroud(they come on at 190), isis radiator hoses, nismo thermostat, also my water pump was replaced before the cooling system as well a power enterprise hg. I have no idea what else to trouble shoot, and this problem has only surfaced over the past few months. I also have replaced the stock turbo water lines with taka lines. I'm stuck, and can't figure out what to do.
 
put a coolant pressure tester on it. if im not mistaken, you can rent this tool from advanced. let the car cool off, hook up this tester and pump the pressure up to whatever is written on the radiator cap. then start lookin around for leaks.

here is a pic of the tool:

PressureTester.jpg
 
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