Fuel leak clk 320 w208

[bob13]

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.....

 

[television]

This is the tank

 

[television]

The fuel lines are here, you do have the return to tank pipes as well.

 

[bob13]

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.

 

[television]

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

 

[rpe2]

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.

 

[bob13]

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..

 

[rpe2]

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

 

[bigasotonuk]

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.

 

[bob13]

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..

 

[television]

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

 

[tambyrne]

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.

 

[bob13]

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.

Thanks for replying, was that main dealer or indi ?

 

[tambyrne]

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..

 

[bob13]

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.

 

[television]

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

 

[bob13]

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

 

[television]

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.

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

 

[bob13]

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.