Cooling System Problem! Need Top Up Coolent In Radiator Everytime

[Simon-S14]

it means as i said earlier... you have either a LEAK or a HEADGASKET problem.

a header tank will not solve this.

if you have done the tests that i and others have mentioned and you are still losing coolant then you have a LEAK or HEADGASKET problem. the heater core which has a flowing path of coolent thro it is one of many possible places for a leak to occur.

stop asking silly questions and start doing some real tests on your car to find the problem.

[Nosure]

it means as i said earlier... you have either a LEAK or a HEADGASKET problem.

a header tank will not solve this.

if you have done the tests that i and others have mentioned and you are still losing coolant then you have a LEAK or HEADGASKET problem. the heater core which has a flowing path of coolent thro it is one of many possible places for a leak to occur.

stop asking silly questions and start doing some real tests on your car to find the problem.

I done pressure test no leaking

I changed a cap it doesn't help

the headgasket is fine, because motor is not taking any coolant.

I cleaned the overflow bottle.

I bleeded system

as i said on the topic, it was not losing coolant, the coolant just not fully go back to radiator when cold. I know my question is silly, the problem look very simple, but it just not simple to fix.

Edited November 2, 2009 by Nosure

[Simon-S14]

wtf, you said you were losing coolant each time.

just fill it up, mark the over flow, and drive the f**king car

[Nosure]

wtf, you said you were losing coolant each time.

just fill it up, mark the over flow, and drive the f**king car

you don't read??

[Johnny]

did you check the turbo water lines? my s15 in the past (including GTR's) have solid lines i think for water and oil - when under heat, metal expands and moves slightly which can crack the lines

my s15 lost coolant and couldnt figure out why: we pressurised the system and nothing until we put it up onto a hoist and ran the car in-gear = water began leaking out of the turbo water lines.

apparently common; my fix was braided lines to replace the solid ones.

not sure if this is ur problem but though id throw it in anyways, might jst get lucky - all the best mate

-Johnny

[Nosure]

did you check the turbo water lines? my s15 in the past (including GTR's) have solid lines i think for water and oil - when under heat, metal expands and moves slightly which can crack the lines

my s15 lost coolant and couldnt figure out why: we pressurised the system and nothing until we put it up onto a hoist and ran the car in-gear = water began leaking out of the turbo water lines.

apparently common; my fix was braided lines to replace the solid ones.

not sure if this is ur problem but though id throw it in anyways, might jst get lucky - all the best mate

-Johnny

thank you, but my turbo is T517Z which is non-water cooled.

[nemini90]

i have the sae problem as you the car i not loseing coolent what it is doing is when the car gets hot the water expands into the overflow bottle and then when it cools it is only taking about half of it back so when you drive the car a few times it fills the over flow and gets hot cause it not taking the water back

so far i have changed radiator thermostat tryed no themostat changed water pump checked flow through block

the only thing i have left to check is the head gasket i think under load it has a sall leak and is blowing presure into the water side which is overflowing the overflow

[GODZ1LLA]

Sounds like your head gasket to me??

Is the water mixing in the oil (check oil cap) or oil mixing in the water check rad...

If not any white smoke at all??

[nemini90]

no water in oil and no oil in water no smoke

the car drives fine just overflow and not taking the water back

[nemini90]

i just did a dye test and found head gasket gone

i wont be using a cometic again

[GODZ1LLA]

Gutted for ya hope its an easy fix....