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Fuel pressure - S3

Discussion in 'A3/S3 Forum (8L Chassis)' started by jesters3, Nov 21, 2007.

  1. jesters3
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    jesters3 Active Member VCDS Map User

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    [Nov 21, 2007]
    Arvo, a couple of times when I have gone to fill up, there seems to be a lot of pressure coming out of the fuel tank. As a result I have to keep the cap on and unscrew it slowly to let the air out; if I take it off straight away petrol spews out. This lasts for a good 30 seconds.

    I smell petrol every now and again from the front. I'm thinking I may have to get the fuel filter changed as the build up may be from here.

    Any ideas?

    Cheers
    #1
  2. campbell
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    campbell Member

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    [Nov 21, 2007]
    change the fuel filter and see if its any better, simple job if up on ramps
    #2
  3. jojo
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    jojo Looking for Boost! Staff Member Moderator

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    [Nov 21, 2007]
    Mine makes a little chirp which lasts under a second, and no fuel spirts out, get it checked mate.
    #3
  4. jesters3
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    jesters3 Active Member VCDS Map User

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    [Nov 22, 2007]
    Yeah not brilliant, going to get the filter replaced as it has done 149k worth of fuel! Hopefully that should fix it.
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  5. patrick swayze
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    patrick swayze Member

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    [Nov 26, 2007]
    do it yourself, it takes like 5 minutes?
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  6. jesters3
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    jesters3 Active Member VCDS Map User

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    [Nov 26, 2007]
    Will do, Getting the filter tomorrow from VAGPARTS and doing it at the weekend, seems straightforward enough, just have to remember to depressurize the system before I crack on!
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  7. mazzy
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    mazzy Member

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    [Dec 22, 2007]
    So does changing the fuel filter resolve this issue??
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  8. jonS3
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    jonS3 Member

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    [Dec 22, 2007]
    even if it doesn't it's worth changing anyway for the sake of a few £ and the fact that about a million litres of fuel have passed through it.........
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  9. mort
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    mort New Member

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    [Sep 26, 2009]
    judging from there being no more posts i take it replacing the fuel filter solved the problem? I know it was about 2 years ago but im just asking because i have the same problem!
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  10. jesters3
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    jesters3 Active Member VCDS Map User

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    [Sep 28, 2009]
    No i'm afraid not.

    The issue came down to a fubar gravity valve (part 14)

    [​IMG]

    This meant dropping the fuel tank to get to the part and then to replace. The part is about £5 but takes 3-4 hours to sort out.

    I had to get it done at a Stealers and it cost me £500ish all in. If you get this done at an indie it should be half the price.
    #10

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