Vacuum Line diagram

cuddapah · 10-30-2021, 08:57 PM

On my 2011 Z4 35i, replacing boost solenoids and pulled vacuum hose that goes down. It came out easily ... maybe got loose. I am trying to connect it back and couldnt figure out where. It is 9 in this diagram. Does anybody have a clearer diagram ?
https://www.realoem.com/bmw/enUS/sho...59#11747626350

Also where are the non-return valves located ?
Appreciate any help.

KennyP · 10-31-2021, 04:34 AM

9 (there are 2 of them) should go to either front or rear turbo wastegate control.
Im assuming you pulled one off its nipple.. They are a bit of pain to get back... rear is a bit easier... front is harder.

Here is a simple n54 vacuumline graph that i found on other forum. Should make it easier.

cuddapah · 10-31-2021, 10:35 AM

@KennyP

Thank you !

I have to connect to the one of the front. Very tight space. Could reach it but very difficult to connect. Any suggestions ?

KennyP · 10-31-2021, 11:25 AM

If you cant get your hand in there then you can unbolt coolant expansion tank and move it a bit to make more room...
You may lose some coolant though if you undo any hoses connected to it.

You can later refill and do the coolant bleeding procedure just to be sure...

Also remove engine cover if you havent yet.

You cant really see the nipple so you have to feel around with your hand and find it.
Dont really remember how i did it... it was years ago. And it was troublesome to get it on there.

There are also videos on youtube for n54 vacuum lines diy-s that you can check out.
heres one for example:
https://youtu.be/ffgJ2NhFYgU?t=488

but these are all on 3 series or 1 series and they have coolant tank in a different location....

10-30-2021, 08:57 PM	#1
cuddapah First Lieutenant 41 Rep 312 Posts Drives: 2011 BMW Z4 sDrive 35i Join Date: Feb 2012 Location: Jacksonville, FL iTrader: (0)	Vacuum Line diagram On my 2011 Z4 35i, replacing boost solenoids and pulled vacuum hose that goes down. It came out easily ... maybe got loose. I am trying to connect it back and couldnt figure out where. It is 9 in this diagram. Does anybody have a clearer diagram ? https://www.realoem.com/bmw/enUS/sho...59#11747626350 Also where are the non-return valves located ? Appreciate any help.
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10-31-2021, 04:34 AM	#2
KennyP Lieutenant 141 Rep 461 Posts Drives: 2009 Havana E89 Z4 Sdrive35i Join Date: Apr 2016 Location: Estonia iTrader: (0)	9 (there are 2 of them) should go to either front or rear turbo wastegate control. Im assuming you pulled one off its nipple.. They are a bit of pain to get back... rear is a bit easier... front is harder. Here is a simple n54 vacuumline graph that i found on other forum. Should make it easier. __________________ 2009 35i DCT Havana brown with ivory white interior. Mods: Cobb stage 1+FMIC, Wagner EVO1 FMIC, BMS DCI, KW V3 suspension, M3 front control arms, Hardrace RTAB, Michelin Pilot Sport 4S tires. Last edited by KennyP; 10-31-2021 at 04:47 AM..
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10-31-2021, 10:35 AM	#3
cuddapah First Lieutenant 41 Rep 312 Posts Drives: 2011 BMW Z4 sDrive 35i Join Date: Feb 2012 Location: Jacksonville, FL iTrader: (0)	@KennyP Thank you ! I have to connect to the one of the front. Very tight space. Could reach it but very difficult to connect. Any suggestions ?
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10-31-2021, 11:25 AM	#4
KennyP Lieutenant 141 Rep 461 Posts Drives: 2009 Havana E89 Z4 Sdrive35i Join Date: Apr 2016 Location: Estonia iTrader: (0)	If you cant get your hand in there then you can unbolt coolant expansion tank and move it a bit to make more room... You may lose some coolant though if you undo any hoses connected to it. You can later refill and do the coolant bleeding procedure just to be sure... Also remove engine cover if you havent yet. You cant really see the nipple so you have to feel around with your hand and find it. Dont really remember how i did it... it was years ago. And it was troublesome to get it on there. There are also videos on youtube for n54 vacuum lines diy-s that you can check out. heres one for example: https://youtu.be/ffgJ2NhFYgU?t=488 but these are all on 3 series or 1 series and they have coolant tank in a different location.... __________________ 2009 35i DCT Havana brown with ivory white interior. Mods: Cobb stage 1+FMIC, Wagner EVO1 FMIC, BMS DCI, KW V3 suspension, M3 front control arms, Hardrace RTAB, Michelin Pilot Sport 4S tires.
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