Quote:
Originally Posted by wmb007k
Hello, hoping for help diagnosing an issue.
I have a 2010 BMW 128i and when I fill up the gas tank full I smell gasoline coming from the back rear driver’s side. When I don’t fill up fully, the smell is not noticeable or barely noticeable. I don’t smell gas inside the car but it seems to be coming from the outside.
I had got an engine light with error code P0456 small evap leak 2A16. I cleared the error code and it has not come back after driving about 100km.
Brought it to the mechanic #1 and he thought it was the fuel pump. I replaced the O rings of the left and right fuel pump instead of the the entire fuel pump system. The gasoline smell is still there.
Brought it to mechanic #2 who thought it was potentially the charcoal canister or that the O ring was not tightened properly.
If it is the fuel pump, is it worth replacing the whole unit or just the O ring? Thank you!
Any input would be appreciated. Thank you!
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Had the same experience. Changed O ring, no difference. Changed fuel pump and it was fixed. It was cracked.