cooling system - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

mac101 · 24th June 2008, 05:06 PM

i have just changed out the inlet gaskets on my R33 GTR it seems now i have a air lock in the cooling system i am getting hot air via the cars heating but have no pressure on the rad hoses my question is when you undo the bleed bolt at the side of the fuel rail should it just be a dibble coming out or should it be a jet also is it so inportant to do this when the engine is cold by the time i got the hole unblocked the engne was hot and yh coolant just dribbling out

ps i have done a search but not muc mentioned

mac101 · 24th June 2008, 06:53 PM

any cooling system experts out there !!

Light-R · 24th June 2008, 08:17 PM

really dont know mate, but wouls like to know also

iceager · 24th June 2008, 08:40 PM

Would like to know also, how it is you bleed it correctly...

But i found out yesterday when i changed the radiator hoses, that after filling the radiator with coolant then block the overflow hose on the radiator, unscrew the bleed screw, then blow down the radiator till coolant comes out, then screw the bleed screw in again while you keep pressure in the system.

Start the engine and wait a minute or 2 to unscrew the bleed screw and bleed till coolant comes out.

But i havent had any problems so far with temperature or heating at all.

frostmotorsport · 26th June 2008, 01:23 AM

well, my bleed bolt doesn't! The cavity behind it is blocked up with gunk so no water comes out. However, I have dropped the coolant in the motor several times and never had any issues (just changed thermostat!)

mac101 · 26th June 2008, 07:13 AM

just quick update had a good poke around in the bleed hole got loads of gunk out now the water runs out fine blead system and hose pressure came up a bit turns out to be a faulty radiator cap replaced cap and now its spot on now thats sorted it back on with some engine mods

Thanks for all your advice guys

24th June 2008, 05:06 PM	#1 (permalink)
mac101 GTR Register Member Join Date: May 2008 Location: NORTHWEST Posts: 49	cooling system i have just changed out the inlet gaskets on my R33 GTR it seems now i have a air lock in the cooling system i am getting hot air via the cars heating but have no pressure on the rad hoses my question is when you undo the bleed bolt at the side of the fuel rail should it just be a dibble coming out or should it be a jet also is it so inportant to do this when the engine is cold by the time i got the hole unblocked the engne was hot and yh coolant just dribbling out ps i have done a search but not muc mentioned

24th June 2008, 08:40 PM	#4 (permalink)
iceager GTROC Member Join Date: Dec 2004 Location: Sweden Posts: 736	Would like to know also, how it is you bleed it correctly... But i found out yesterday when i changed the radiator hoses, that after filling the radiator with coolant then block the overflow hose on the radiator, unscrew the bleed screw, then blow down the radiator till coolant comes out, then screw the bleed screw in again while you keep pressure in the system. Start the engine and wait a minute or 2 to unscrew the bleed screw and bleed till coolant comes out. But i havent had any problems so far with temperature or heating at all. __________________ http://www.rhdjapan.com http://www.skyline.se Turbo info Mines Titanium Exhaust R33GTR Aligment numbers

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24th June 2008, 06:53 PM	#2 (permalink)
mac101 GTR Register Member Join Date: May 2008 Location: NORTHWEST Posts: 49	any cooling system experts out there !!

24th June 2008, 08:17 PM	#3 (permalink)
Light-R GTR Register Member Join Date: Apr 2007 Location: lisbon Posts: 652	really dont know mate, but wouls like to know also

26th June 2008, 01:23 AM	#5 (permalink)
frostmotorsport GTR Register Member Join Date: Aug 2007 Location: Wellington, NZ Posts: 765	well, my bleed bolt doesn't! The cavity behind it is blocked up with gunk so no water comes out. However, I have dropped the coolant in the motor several times and never had any issues (just changed thermostat!)

26th June 2008, 07:13 AM	#6 (permalink)
mac101 GTR Register Member Join Date: May 2008 Location: NORTHWEST Posts: 49	just quick update had a good poke around in the bleed hole got loads of gunk out now the water runs out fine blead system and hose pressure came up a bit turns out to be a faulty radiator cap replaced cap and now its spot on now thats sorted it back on with some engine mods Thanks for all your advice guys