Manually Bleed Coolant

E92-N54 · 08-02-2014, 08:39 PM

Is there a way to manually bleed cooling system on 07 n54?

My stock bleeder screw broke, so I bought a new. I noticed the stock one has a pin hole on top, but my new one doesnt. I assume the small pin hole so it can bleed the air out? Or does it matter if there is a pin hole or not?

I dont want to bleed the system automatically and there is no way for the air to go out so something else blows out.

I have to wait for them to send me another one.

Ingeniator · 08-02-2014, 10:37 PM

You bleed the coolant via the water pump procedure with the reservoir cap off. As far as I'm concerned the bleeder screw is not required. I wasn't aware of any pinhole and I think it would leak pressure unless it was just a vacuum breaker with some type of check valve to prevent pressure loss. Either way I wouldn't worry about it.

08-02-2014, 08:39 PM	#1
E92-N54 Private First Class 8 Rep 182 Posts Drives: BMW 335i Join Date: Mar 2014 Location: Fort Smith, AR iTrader: (4)	Manually Bleed Coolant Is there a way to manually bleed cooling system on 07 n54? My stock bleeder screw broke, so I bought a new. I noticed the stock one has a pin hole on top, but my new one doesnt. I assume the small pin hole so it can bleed the air out? Or does it matter if there is a pin hole or not? I dont want to bleed the system automatically and there is no way for the air to go out so something else blows out. I have to wait for them to send me another one.
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08-02-2014, 10:37 PM	#2
Ingeniator Major 34 Rep 1,093 Posts Drives: 07 335XI(90) 09 135I(82) Join Date: Nov 2013 Location: Fort Mac, Alberta iTrader: (1)	You bleed the coolant via the water pump procedure with the reservoir cap off. As far as I'm concerned the bleeder screw is not required. I wasn't aware of any pinhole and I think it would leak pressure unless it was just a vacuum breaker with some type of check valve to prevent pressure loss. Either way I wouldn't worry about it. __________________ 07 335XI (A008006) 6AT ~94K miles JB4 G5 ISO VSRF DP's 09 135I M (VK80379) 6MT. Race Project car. 1) Install Cobb/piggyback? and Motiv 600 Kit[HTA3076R w/ tial .82] 2) JRZ or Moton suspension. 3) Build high flow intake manifold with multi-port fuel and relocate OFH 4) Build full cage 5) Complete staged twin setup with HTA4205R [w/Tial 1.16] 6) Complete dry sump system
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