leaking diesel tank when full
leaking diesel tank when full
Author
Discussion

redray

Original Poster:

1 posts

177 months

Wednesday 8th February 2012
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Hi,
Bought a 318D SE recently from a Mercedes dealer. They offered me a full tank of fuel which i thought strange (imagine the cost if they did this for every car sold). On filling for the first time on a rainy day, noticed the rainbow effect diesel has on water but could not identify where the leak was. To make sure i had not overfilled, i filled up next to one click on a dry day and sure enough the leak was evident from under the rear drivers side door which i understand to be a breather pipe fault.

I took the car back to MB were they said they would have to drop the tank. They have told me that they could not find a leak or a problem, (which they wouldnt has the tank was almost empty) and said that it would cost £700 to fix and the 3 month warranty did not cover it. Their answer was to not fill the tank up. I told them that a fuel leak would fail an MOT, were again they said it wouldnt if i didnt fill it up. I have told them that it is illegal to sell cars knowing that the car would fail an MOT and is not only an health and safety issue, environmental issue, and unroadworthy.

I know they are trying to fob me off, i dont believe the tank has been dropped and put back again, however i still have their courtesy car.

Anybody any good ideas what to do next?

waxaholic

374 posts

230 months

Wednesday 8th February 2012
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Are you that its not the overflow pipe doing its job ?

TheEnd

15,370 posts

219 months

Wednesday 8th February 2012
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You're not brimming the tank til it's trying to flow out of the cap are you?

cslwannabe

1,570 posts

200 months

Wednesday 8th February 2012
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A work colleague had a 320d and it did the same - suggest you try searching and see if it's a fairly common/ known issue.

Spudler

3,985 posts

227 months

Wednesday 8th February 2012
quotequote all
cslwannabe said:
A work colleague had a 320d and it did the same - suggest you try searching and see if it's a fairly common/ known issue.
Yes it is. Wifes 320d also does it. Problem as dealer described to OP. stter of a job.