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2012 Mercedes C250 coupe 1.8L turbo - gas smell

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Old 01-10-2023, 04:55 PM
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2012 Mercedes C250 1.8L turbo
2012 Mercedes C250 coupe 1.8L turbo - gas smell

So my wife's car just started having a strong gas smell when the tank is filled up. It's strongest inside the car so I suspect the gas tank cover (under the rear seat) has a crack in it and also needs the gasket replaced. I went to the MB dealer and that plastic bolt on cover is sold only with a new fuel pump and it's like $800 CDN.

Was thinking about using plastic epoxy that is gasoline resistant. Have anyone done this before?

Richard

Last edited by Richard Koop; 01-14-2023 at 07:28 AM.
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Old 01-14-2023, 03:22 PM
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2012 Mercedes C250 1.8L turbo
So I took a look at the top of the fuel tank under the rear seat. The fuel pump cover(s) (yes, there are 2 fuel pumps for my car) were fine and no leaks or smell. I crawled under the car and noticed the worst raw fuel smell coming from the driver's side rear (near the wheel well).

So probably a fuel line corroded or the point where the fuel filler tube connects to the tank is having an issue. Are fuel lines easy to replace? Can the job be dangerous?

Richard

Last edited by Richard Koop; 01-15-2023 at 07:46 AM.
Old Yesterday, 11:50 PM
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2014 C250 Sport
Same Issue and smell location

Did you get it fixed? Im having the exact same issue with my c250!
Old Today, 01:19 PM
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2011 C300 4Matic Sport
There’s only 1 fuel pump. The 2 covers are fuel pump cover and fuel filter. I replaced both because of leaks.

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