Lately I've noticed that my fuel pump is making a loud noise. Louder and higher pitched than the normal whine.

Also, I noticed the oil smells a bit like gas, which I understand may be a rich setting. Could this be the fuel pump or is it something like the o2 sensor?

Thanks

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Smoke Silver 1994 E220 Coupe Automatic
0 kilometers 6 September 1994
100,635 kilometers - 6 September 2010