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Old 04-02-2015, 09:09 AM   #1
nody6262 OP
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Puke Depressurize Fuel Tank

Hi all.
New member here, could anyone point me to where I can get information to depressurize my fuel tank. I am in the process of removing the ABS Servo. I have a 2003, R1150 GSA Adv.
Thanks for any help.
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Old 04-02-2015, 09:58 AM   #2
Sniperx
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Open the gas cap?


Seriously...I don't think the tank should be holding any pressure. When I pull mine I just unhook the QDs and pull.
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Old 04-02-2015, 10:14 AM   #3
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Tank depressurization lever is to the left and above the coolant drain.
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Old 04-02-2015, 11:04 AM   #4
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The QDs shut off on each side an the tank is vented through the carbon canister, so I'm not sure what pressure you're worried about.
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Old 04-02-2015, 01:56 PM   #5
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Quote:
Originally Posted by cele0001 View Post
Tank depressurization lever is to the left and above the coolant drain.
That's the Knuter valve! Don't mess with it!
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Old 04-02-2015, 05:35 PM   #6
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Quote:
Originally Posted by Twilight Error View Post
The QDs shut off on each side an the tank is vented through the carbon canister, so I'm not sure what pressure you're worried about.

Hi, I am not sure, the manual talks about De-pressurizing the tank before removal, but does not say how?
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Old 04-02-2015, 05:59 PM   #7
JMforPres
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I believe they are talking about the fuel lines. When I put quick disconnects on my 02 they were under pressure even after sitting overnight.

Jon
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Old 04-02-2015, 06:06 PM   #8
def
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What's going on with the ABS unit that you need to remove it?
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Old 04-02-2015, 06:09 PM   #9
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I believe they are talking about the fuel lines. When I put quick disconnects on my 02 they were under pressure even after sitting overnight.

Jon
Except I don't think there is any manual pressure relief for those lines, both QDs close when disconnected. You'll lose whatever fuel is trapped in the cavity - a couple drops at the most - as they're separated, but they won't spray or leak.
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Old 04-03-2015, 04:53 AM   #10
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Good practice is to turn away and/or wear safety glasses when disconnecting.
But I've never noticed mine squirt out when separating them.
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Old 04-03-2015, 05:10 AM   #11
JimVonBaden
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The tank is not pressurized. Either you are misreading the manual, or it is wrong. Disconnect the tank and remove it. Simple.
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Old 04-03-2015, 05:43 AM   #12
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It could be that the disclaimer is in the manual as sort of a standard safety precaution, there can be small amounts of residual pressure inside a fuel tank from temperature variations even though the vented fuel cap normally prevents this.
I'm thinking a more likely scenario is a warning message to "depressurize the fuel lines".
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Old 04-03-2015, 06:59 AM   #13
def
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Quote:
Originally Posted by JetSpeed View Post
It could be that the disclaimer is in the manual as sort of a standard safety precaution, there can be small amounts of residual pressure inside a fuel tank from temperature variations even though the vented fuel cap normally prevents this.
I'm thinking a more likely scenario is a warning message to "depressurize the fuel lines".
Does this have anything to do with those masks that drop down in case of sudden cabin depressurization?
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Old 04-03-2015, 07:48 AM   #14
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Be careful if you have the older plastic disconnects. The male ends brake off easily and then your stuck using a barbed connection or you'll need to buy some new ones from BMW or Beemer bone yard.
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Old 04-03-2015, 08:50 AM   #15
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Quote:
Originally Posted by def View Post
Does this have anything to do with those masks that drop down in case of sudden cabin depressurization?

Ahhhhhhh..........NO.
Just make sure that your wife puts your mask on first, then hers and you'll be OK.
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