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Thread: 2001 e46 M54 gas leak

  1. #1
    Join Date
    Jun 2010
    Location
    Akron, OH
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    40
    My Cars
    2001 BMW 330i

    2001 e46 M54 gas leak

    Anyone have an e46 that has had a gas leak by the left (drivers side) rear of the car just in front of the rear tire? It is a very slow drip. My tank is full, but the car has not been driven all winter. The drip just started about a week ago. I suspect one of the fuel lines are leaking somewhere near the front of the tank but I canít get underneath the car for a good look where it is in the garage.
    Has anyone had a similar problem with theirs?
    I appreciate any help with this.
    Thanks.

  2. #2
    Join Date
    Jan 2016
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    Ca
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    1,842
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    2001 525it
    Remove the low cushion rear seat, remove access panels look at the top of the gas tank where the threaded ring is that holds the fuel pump in or sender check there

  3. #3
    Join Date
    Jul 2011
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    Arlington, VA
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    2018 BMW M240i
    The electric fuel pump is on the passenger side of the car. There is a sucking jet pump on the driver’s side.

  4. #4
    Join Date
    Jun 2010
    Location
    Akron, OH
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    2001 BMW 330i
    Quote Originally Posted by jclausen View Post
    Remove the low cushion rear seat, remove access panels look at the top of the gas tank where the threaded ring is that holds the fuel pump in or sender check there
    Thanks, Iíll have a look at it.

  5. #5
    Join Date
    Jun 2010
    Location
    Akron, OH
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    2001 BMW 330i
    Quote Originally Posted by MarcoZandrini View Post
    The electric fuel pump is on the passenger side of the car. There is a sucking jet pump on the driver’s side.
    Thanks.
    Last edited by JasLione; 04-10-2018 at 05:51 PM.

  6. #6
    Join Date
    Jul 2011
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    Arlington, VA
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    2018 BMW M240i
    Basically, the fuel tank appears to be a single piece, and not 2 separate tanks. Here the link to realoem:

    http://www.realoem.com/bmw/enUS/show...diagId=16_0372.

  7. #7
    Join Date
    Jun 2010
    Location
    Akron, OH
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    40
    My Cars
    2001 BMW 330i
    Thanks. Iím familiar with the website. Am going to have a look at the car this weekend if I have time.

  8. #8
    Join Date
    Jun 2010
    Location
    Akron, OH
    Posts
    40
    My Cars
    2001 BMW 330i
    Thanks again for the advice. I pulled the rear seat and had a look at the fuel sender locations (both sides). Right side where (I think) the pump is, was high and dry. Left side (where my gas leak is) had a mouse nest in it that was sitting in a puddle of gasoline.
    I cleaned out the nest and siphoned out the gas. Funny thing is that, aside from the puddle of gas, I donít see where the leak is coming from, especially considering that the car had not been started all winter. I turned ignition to Ďruní in order to pressurize fuel system and no visible leak.
    So now I am trying to figure out 1) what is the best way to get rid of mice and 2) where that puddle of gas came from...

  9. #9
    Join Date
    Mar 2016
    Location
    Portland, OR
    Posts
    290
    My Cars
    2002 325Ci Cabriolet

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