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Fuel Leak

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by a4sline190, Oct 18, 2007.

  1. a4sline190
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    a4sline190 Member

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    [Oct 18, 2007]
    Got into the car two days ago and started smelling fuel, had a look underneath by the rear wheel and dripping petrol, car has gone into an independant garage yesterday, the have found fuel line cracked as has been rubbing on the chassis.

    I am pretty pissed off to say the least as is going to cost a good bit in labour, apprarently a design fault, the garage is going to try and do a mod to protect the pipe to avoid this happening again, car is an 04 plate with 25k miles and car went out of warranty in March so no luck with Audi.

    Anybody else had this issue? If not I would probably suggest having a look to modify the pipe or wrapping something round it to prevent a similar fate to mine.
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  3. pav-g
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    pav-g Member

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    [Oct 18, 2007]
    Sorry to hear that mate, hope it doesnt cost too much. I'll have to be wary with my B6
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  4. a4sline190
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    a4sline190 Member

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    [Oct 18, 2007]
    I'll let you know the cost, apparently the fuel tank needs to come out, just aswell i was down to 1/4 tank of V power.

    Should get the car back this afternoon.
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  5. A44NI
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    A44NI Blowin Out Black

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    [Oct 18, 2007]
    I had this problem with my TDI (obviously diesel not petrol) but it turned out to be a small hole like a pinhole in the diesel cooler that apparently cools the diesel that the engine does not use on its return to the tank.

    £280 + labour for the cooler. Dealer only part.
    #4
  6. jase0851
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    jase0851 Member

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    [Oct 19, 2007]
    sorry to hear that a4 hope this doesnt happen to mine
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  7. bubstar
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    bubstar Member

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    [Oct 19, 2007]
    Never heard of this on an A4 before. Is your car Quattro? Can you let us know exactly what was at fault?

    All the best :beerchug:

    BUB
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  8. a4sline190
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    a4sline190 Member

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    [Oct 20, 2007]
    Not a Quattro, plastic fuel line from tank was rubbing onto chassis and wore it away to a leak, got it sorted £17 for the part and £83 labour, so am pretty happy its sorted now, garage has protected the new pipe by putting a foam jacket over it to prevent it happening again. Hope nobody else has this issue.
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  9. Grantola
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    Grantola New Member

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    [Sep 12, 2010]
    Bit late to the party here, but wanted to post up that exactly the same thing happened to my 2003 A4 Avant 1.8T 190 at 40k miles. Again, not Quattro. Fuel feed pipe to fuel filter chaffed on the chassis above the filter, opening the pipe up and spraying petrol all over the underside of the car. I drove from Manchester to Carlisle with it leaking and the underside of the car was soaked. This was 250 miles after being serviced by a franchised Audi dealer!
    #8
  10. jolly14
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    jolly14 Member

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    [Sep 14, 2010]
    Hi mate can you tell us if you can see this pipe where it rubs on the chassis.

    Many thanks
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  11. Grantola
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    Grantola New Member

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    [Sep 20, 2010]
    With the car on a ramp it's fairly easy to see. In front of the offside rear wheel there is a plastic deflector plate which notionally covers the fuel filter. If you either bend the plate back or remove it you'll see the fuel filter and a number of fuel hoses. On mine, the fuel hose to wear through was one of the two from the top of the tank down to the filer. It wore through by chaffing against the weld in the middle of the chassis member which is directly above the fuel filter. The chaff point is clearly visible from below with the deflector removed or bent back. The chaff was around 6 to 8 inches back on the delivery line to the filter from the tank.

    I lost around half a tank of petrol over a 3 hour period from a pin-sized chaff hole.
    #10
  12. jp1
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    jp1 New Member

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    [Jul 19, 2011]
    well look's like I might have the same problem as Grantola above, Leaking from the position of the fuel filter just in front of the off-side rear wheel.

    Had the car MOT'ed on Saturday, drove 100 motorway miles straight after the MOT, not driven Sunday or Monday, Tuesday I find fuel pissing out when I drive 5 miles.

    Took in back to MOT station, they wouldn't let me look at it with the MOT guy, claim that the pipe is split, but didn't tell me which one!!

    Having it looked at by another garage tomorrow where I will get the real story. Leak in line due to chaffing or one of the connectors screwed as the pipe was pulled to hard during the MOT.
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  13. Rhencullen1989
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    Rhencullen1989 190 S LINE QUATTRO

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    [Jul 20, 2011]
    Does this problem seem only to affect the Non-quattro models, mine is the 1.8T quattro S-line 2004, its done 70K miles and i have owned from 59K.

    I assume the chaffing is on the rear axle where as the quattro will use a rear subframe?
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  14. jp1
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    jp1 New Member

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    [Jul 25, 2011]
    Both pipes now replaced (from tank to filter). £35 for pipes, £40 labour from my local village garage. £85 all in inc VAT. So I can't really complain.

    My car is 1.8T 190 SE.

    Car has done 132k miles, so maybe it's just a matter of time as opposed to design fault. Garage did say that pipe was rubbing against chassis, but obviously it has taken 132k miles to cause the split.
    #13

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