Rb26 Coolant Air Bleed Screw

[DVS JEZ]

was chasing a high idle issue on my 32 GTR, went to bleed the coolant system, took the air bleed screw out and nothing happened, tried forcing water in the radiator with a hose, nothing came out, tried hose into the air bleed hole. nothing, got an air blower attached to compressor, nothing, its completely blocked,

i have no idea why it would be blocked, any one had this problem or have any suggestions on this issue.

on a side note, the high idle issue- i tried winding the idle all the way down with the aac valve, still up at 1600rpm, tried unplugging it, checked for vaccuum leaks etc tried the idle screw on the ecu etc etc, no luck.

i took off the throttle linkages and then the engine idled at 850rpm, found that 2 of the linkages were adjusted too tight, i adjusted them with the engine running so it didnt change the idle, then i adjusted the idle up to 950rpm with the aac valve screw.

cheers

Jez

[fatz]

id you polish your throttle bodies?

[DVS JEZ]

i bought the car 3 weeks ago buddy and havent had the plenum off... i fixed the high idle problem but, it was the throttle linkages.

[Duncan]

on flat ground

open the radiator cap (when cold). cut a 1.25l drink bottle's bottom off, and fill with electrical tape so that it is a snug fit in the radiator cap mounting.

undo bleed screw

fill bottle with water, watch water flow out bleeder.

otherwise.....you might be right

[DVS JEZ]

i know how to bleed it normally, BUT what does this mean???

[Duncan]

what happened when you did what I suggested? that is not how it would normally be bled.

If you are genuninely not getting coolant out the bleeder trying that on flat ground, you have a serious issue in the intake manifold at best. and pulling that off is a bastard

[Cartman]

try stick something sharp down the bleeder to destroy the build of what ever is in there... otherwise.. check if it is hooked up still?

[STATUS]

its pretty common for the bleeders to be blocked (poor maintenance) it is not that hard to fix, even if you have to pull off the vaccum / coolant bar... its 4 or six allen screws and a few o-rings.

[DVS JEZ]

thanks status, iwill pull it off tommorow.

[snozzle]

Mine does this too, i just manually pump the bottom rad hose and the bleeder starts to do its job, NO idea why i have to do this though? used to be fine

whoopsie, just realised how old this post is

Edited October 16, 2011 by snozzle

[DVS JEZ]

Haha. Thanks lol.

Mine has been going strong without unblocking it.

What the hell made u reply to this topic?

[mico]

u will have a more reliable idle with all that gear in the bin, seriously.

[snozzle]

I was searching up coolant flow direction in rb26s and this came up

[Piggaz]

Jez, I had the same thing with my car mate. Brett ended up fixing it. Long story short we blew compressed air through the bleed screw and it was all good.... and has been since (that was almost 12 months ago).

[DVS JEZ]

Thanks Paul, i did try that at the time but it must be past that stage.

[The Mafia]

Hey guys. Another thread revival haha (Sorry DVS)

Where is the coolant bleeder on the BNR34? Does it even have one?

Found this thread via google. Have been looking in google images but it hasn't brought anything up.

[Hadouken]

Holy thread dig batman! Im sure Jez doesnt care anymore. He is to busy nowadays.

Its a RB26 it has one.

between rocker cover and plenum.

put coke bottle in radiator, much easy, less spill

[The Mafia]

haha yeah sorry about that.

So if I do the coke bottle trick I won't need to worry about the bleed screw?

[Hadouken]

The air bubbles will travel to the highest point in the cooling system. The coke bottle is the escape route.

[MrStabby]

The air bubbles will travel to the highest point in the cooling system. The coke bottle is the escape route.

Not if there's a low point in between. Definitely make sure you get coolant out the bleeder and leave it open until there's no more bubbles. I don;t need the coke bottle with my 32 if its on flat ground.