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Fuel leak clk 320 w208

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by bob13, Dec 24, 2012.

  1. bob13

    bob13 Senior Member

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    Evening all
    Just got home from the Xmas present run, when I got home I could smell petrol. Now after a quick look underneath I have found petrol on the tank front, passenger side.

    So my question is what could it be, is there a breather pipe above there or a return pipe etc. Car seems to be running fine.

    Many thanks and happy Christmas

    Rob.....
     
  2. television

    television Always remembered RIP

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  3. television

    television Always remembered RIP

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    The fuel lines are here, you do have the return to tank pipes as well.
    [​IMG]
     
  4. OP
    bob13

    bob13 Senior Member

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    Many thanks, so looking at the diagrams pipes 107/113 could be leaking. And they look like breather pipes. I had the brake lines done in oct so I am guessing when they dropped the tank the pipes have worked loose over time. Just hope there is easy access.

    Cheers bob.
     
  5. television

    television Always remembered RIP

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    These tanks never leak so hopefully a pipe as you say,,it must be one low down
     
  6. rpe2

    rpe2 Senior Member

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    If it leaks more when the tank is full, then I'd go for the drain plug seals (item 20 in Malc's 1st pic)

    Done a couple of these... cost of seals is pence.
     
  7. OP
    bob13

    bob13 Senior Member

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    Thanks rpe2, looking at it the leak it is defiantly coming from the top of the tank. Funny you should mention the tank being full. It has been the first time for ages that I filled the tank to the brim last week. It is now on half ish.

    Cheers bob..
     
  8. rpe2

    rpe2 Senior Member

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    Looking around some old posts with the same symptoms, there have been reports of pipes perishing - worth getting onto a ramp to check over..
     
  9. bigasotonuk

    bigasotonuk Senior Member

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    As above it is almost certainly a perished pipe rather than the tank itself. I have had to replace several pipes on both of my car's.
    As yours is leaking it should be fairly obvious which one needs to be replaced, but carefully inspect all the hoses and the slightest sign of cracking or perishing replace it, as it might not be leaking but it soon will be.
     
  10. OP
    bob13

    bob13 Senior Member

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    Well had a good look today and it looks like a fuel line has rusted through :( It looks like it is above the rear diff and fuel has been running down a few pipes onto the top of the tank. Anyone had these pipes replaced and a approx cost at a independent?

    Cheers bob..
     
    Last edited: Dec 26, 2012
  11. television

    television Always remembered RIP

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    The main cost will be lowering the subframe if it has the be lowered, I will check later in the day to see what is said
     
  12. tambyrne

    tambyrne Guest

    Had the same problem on my 2001 W208 230K I had the complete fuel pipe system replaced as all showed signs of corrosion. Cost £720 :( all in.
     
  13. OP
    bob13

    bob13 Senior Member

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    Thanks for replying, was that main dealer or indi ?
     
  14. tambyrne

    tambyrne Guest

    Unfortunately it was a main dealer Arnold Clark of Grangemouth. Local indi didn't fancy the job as the rear axle has to be dropped. The cost did include a courtesy car for three days though..
     
  15. OP
    bob13

    bob13 Senior Member

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    Hi again, looking under the car there looks like there is only one metal petrol pipe running from the rear to the front of the car. I am guessing there is no return as the pressure is regulated at source. So if this is the case if I was to run a pipe from the pump at the rear to where the pipe runs under the car, copper plastic or rubber fuel rated of course. Does anyone see a problem.
    When I built my kit car the rules were fairly simple but not sure for a production car, ie modification.
    Still going to garage just to see what cost is involved but they dont open on the 2nd.
    Cheers rob.
     
  16. television

    television Always remembered RIP

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    I did post up that I did a search on plastic fuel pipes, and there are loads of firms that fit them,, this means for subframe dropped.

    Every car has a return to thank system so 2 pipes
     
  17. OP
    bob13

    bob13 Senior Member

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    Do you know where the fuel return pipe would be, couldn't see one. I was guessing there was no return as a few modern fuel injected bikes have no return. And with a quick look where the fuel pump, filter etc there looked like a fuel pressure regulator. But that was just a brief pull flap down look.
    Do you have a diagram of fuel pipe runs etc under the car?

    Cheers
     
  18. television

    television Always remembered RIP

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    It would appear that the return goes back to the filter and not the tank,, I hav given the part list for you to work out.




    [​IMG]

    5 A 202 470 05 75 FUEL HOSE
    Replaced_By: A 202 470 24 75 -
    5 A 202 470 24 75 FUEL HOSE
    FROM FUEL TANK TO FUEL PUMP 001
    8 A 006 997 19 90 LOOM TIE
    FROM FUEL TANK TO FUEL PUMP
    21,5 - 22,5MM 001
    11 A 202 476 46 26 HOSE
    Replaced_By: A 202 476 02 27 -
    11 A 202 476 02 27 HOSE 001
    17 A 005 997 18 90 LOOM TIE
    HOSE FASTENING 001
    20 A 001 997 69 90 LOOM TIE
    HOSE FASTENING 002
    23 A 210 476 27 26 HOSE
    AT PRESSURE REGULATOR 001
    26 A 230 476 87 26 HOSE
    FROM FUEL FILTER TO FEED LINE
    230 MM [404]
    NB
    29 A 001 997 69 90 CLAMP
    FROM FUEL FILTER TO FEED LINE NB
    32 A 208 476 11 26 HOSE
    Replaced_By: A 208 476 14 26 -
    32 A 208 476 14 26 HOSE
    RETURN LINE TO FUEL FILTER 001
    38 A 202 470 38 64 LINE
    FEED LINE 001
    44 A 202 470 23 75 FUEL HOSE
    FROM FEED LINE TO ENGINE 001
    57 A 202 476 44 01 LINE
    RETURN LINE,FROM FILTER TO TANK 001
    59 A 202 476 66 26 HOSE
    Replaced_By: A 202 476 12 27 -
    59 A 202 476 12 27 FUEL HOSE
    FROM RETURN LINE TO TANK 001
    61 A 006 997 61 90 LOOM TIE
    HOSE TO FUEL TANK
    15,5 - 16,5MM 002
    62 A 006 997 61 90 LOOM TIE
    HOSE TO RETURN LINE
    15,5 - 16,5MM 002
    74 N 073379 9008200 HOSE
    SPACING OF FUEL LINES [404]
    NB
    77 A 115 476 00 84 DAMPING STRIP
    SPACING OF FUEL LINES 001
    80 A 201 476 08 84 DAMPING STRIP
    FUEL LINES TO FRONT PARTITION PANEL 002
    80 A 201 476 08 84 DAMPING STRIP
    FUEL FEED/FUEL RETURN 002
    83 A 110 995 00 22 CLAMP
    FUEL LINES TO FRONT PARTITION PANEL 002
    83 A 110 995 00 22 CLAMP
    FUEL FEED/FUEL RETURN 002
    86 A 003 990 02 51 NUT
    FUEL LINES TO FRONT PARTITION PANEL 002
    89 A 202 476 06 84 DAMPING STRIP
    FUEL LINES TO VEHICLE FLOOR NB
    92 A 202 476 03 40 CLAMP
    FUEL LINES TO VEHICLE FLOOR NB
    95 A 201 992 00 30 CLAMPING ELEMENT
    FUEL LINES TO VEHICLE FLOOR NB
    98 A 202 476 04 84 DAMPING STRIP
    FUEL LINES TO VEHICLE FLOOR NB
    101 A 124 476 00 40 CLAMP
    FUEL LINES TO VEHICLE FLOOR NB
    110 A 129 995 00 65 CLAMP
    FUEL LINES TO VEHICLE FLOOR 002
    110 A 000 995 41 65 CLAMP
    Replaced_By: A 000 995 74 65 -
    110 A 000 995 74 65 CLAMP
    Replaced_By: A 000 995 05 77 -
    110 A 000 995 05 77 HOSE BRACKET
    REGENERATION LINE NB
    110 A 000 995 74 65 CLAMP
    Replaced_By: A 000 995 05 77 -
    110 A 000 995 05 77 HOSE BRACKET
    BREATHER LINE NB
    111 A 123 995 00 65 CLAMP
    SPACING OF FUEL LINES 001
    112 A 000 476 04 36 BRACKET
    SPACING OF FUEL LINES 001
    113 A 140 328 09 88 DAMPING STRIP
    BREATHER LINE 001
    116 A 140 995 03 22 CLAMP
    BREATHER LINE 001
    119 A 003 990 02 51 NUT
    BREATHER LINE NB
    122 A 652 476 11 36 BRACKET
    AERATION/DEAERATION 002
    128 A 202 476 05 84 DAMPING STRIP
    BREATHER LINE 003
    131 A 110 995 00 22 CLAMP
    BREATHER LINE 003
     
  19. OP
    bob13

    bob13 Senior Member

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    Hi again,
    Just for the record, my local indi is charging me £340.00 all in. Not as bad I thought, but bad enough......

    cheers rob.
     

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