Water Spurting Out Of Overflow Tank

[GTAAAH]

Hey, my mates got a r32 gtr, has a standard engine in it with n1's (got like 275awkw on 18psi) fuel reg, aluminium radiator, power fc, few other things and we've noticed that every time he gets to work after sitting in traffic his overfill bottle overfills to the point theres water squirting out of the top of it and out onto the pillars.. I've noticed with mine it filling up but it drains back into the radiator..

Is this normal? He's running correct coolant mix (whereas mine is currently a bit low on mix but still not having problems) and his temp gauge always stays smack in the middle, car runs fine

[some_cs_student]

Any idea of water / oil temps?

[GTAAAH]

Any idea of water / oil temps?

Water temp is constantly on half ( like right where it should be) and oil temp ranges a bit because his gauge is a bit dodgy, but generally around half, sometimes flicks up to full until you tap it back down though it's not a proper reading

[gotRICE?]

Its possible that you put too much coolant into the overflow bottle when the radiator was changed/flushed etc.

To test that theory, drain the overflow completely. Then re-fill it to the MAX mark.

If it keeps doing it after that, then you have other problems. Like possibly the radiator cap isnt allowing the water to be sucked back through when the car cools.

My old Hiace did that. When it got hot, it would push coolant into the overflow as normal, but when the engine cooled, under less load, freeway driving, or the key was off,

it was not drawn back into the engine.

So of course the bottle was slightly more full than it used to be.

Repeat this a few times, and bang. Your overflow is full and, overflowing Eventually you will run it dry and cook the engine. So keep a close watch.

[GTAAAH]

k so tried the coolant fillup in the overflow, ended up empty, i think your right with the cap, trying a 1.1 bar cap, hopefully it helps out,cheers

Edited April 5, 2009 by GTAAAH

[GTAAAH]

this has fixed the problem entirely, the 1.1 bar cap was off another model but with a pair of plyers i ghetto fitted it and hasn't leaked or compressed the overflow since