Drain/Syphon the Fuel tank on an X6 - Bimmerfest - BMW Forums

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X6 E71 / E72 (2008 - 2014)
The BMW X6 luxury crossover went on sale in April 2008 as a 2009 model year. BMW referes to the X6 as a Sports Activity Coupe (SAC) as it combines the attributes of an SUV (high ground clearance, xDrive and all-weather ability) with the stance, styling and roof line shape of a coupe. The E71 X6 was built off the E70 X5 (2007 - 2013) platform at BMW's Spartanburg, SC plant. Total worldwide sales were just over 235,000, sold mostly to the BRIC countries. US total sales was 34,082 vehicles.

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Old 04-17-2013, 12:46 PM
redbuster44 redbuster44 is offline
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Location: CA
Join Date: Apr 2013
Posts: 3
Mein Auto: 2010 x6
Angry Drain/Syphon the Fuel tank on an X6

Alright, first post here, but its honestly my last result.

I pulled a real dick move yesterday. I have a diesel truck with dual tanks on it and yesterday at the pump I became distracted and filled the second tank on my truck with 17 gallons of PREMIUM fuel until I realized. OK, no big deal, it had an easily accessible drain, which I drained into a 55 gallon drum. Now I had all this premium fuel I had paid for so, with little thinking, I transferred it into my vehicle knowing its mostly premium and may have little bit of diesel in it. Really wasnt going to think it was a big deal. I drove the vehicle all evening and started to realize it sputtered a little I figured it was just the fuel. Well this morning my vehicle would not start. I guess thats what I deserve. It turns over, and shuts off with the "!" showing an the check engine light. i know these things are very temperamental, so im sure its a sensor not allowing it to run. I drove with this fuel for over 1/4 of a tank and never shut off or anything.

So I pulled off the back seats, got down to the fuel cell, removed the caps, and there is one god forsaken clamp that i have no idea how to get onto. Now before i go through hell trying to get this off, will i have access to my tanks from there? Im assuming one side is the fuel pump and the other is the fuel gauge and they should come out easily and then i can remove the fuel I need to. and replace it with some real premium and some good fuel clean to help replenish my lines and injectors.

Also is there any easier way to do all of this? I tried sticking a 1/2 inch hose into the tank from the outside, which i was able to shove in about 4 feet and would only come in contact with about 3 inches of fuel and try to syphon it out like that but it did not work.

So anyone at all who is willing to give me a little help would be greatly appreciated. Please don't ridicule me either for this either, I tried salvaging my previous mistake and ended up stepping in dog ****. Thanks.
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Old 04-17-2013, 05:37 PM
redbuster44 redbuster44 is offline
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Location: CA
Join Date: Apr 2013
Posts: 3
Mein Auto: 2010 x6
Got those bull**** clamps off, popped the white clamp which holds the fuel pump and gasket in, and was able to get access into my tanks. Vacuumed out all of the fuel and replaced it with GOOD premium gas. What a pain in the ass that was. I will never do that again!
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Old 04-17-2013, 06:31 PM
X5_Rob X5_Rob is offline
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Location: Tampa, FL
Join Date: Mar 2009
Posts: 19
Mein Auto: '11 X6 50i; '05 X5 4.4
I feel your pain brother. Nothing like finally righting a screw up. Glad you got things squared away..
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Old 04-19-2013, 09:07 AM
JimX6 JimX6 is offline
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Location: Florida
Join Date: Apr 2013
Posts: 7
Mein Auto: 2012 X6 35i
Thanks for sharing the story. That can be a lesson to all of us. Glad to see you got this resolved so quickly.

2012 BMW X6 35i
2005 BMW x5 4.4i - Blue with Performance Package (sold)

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