Buzzing/whining sound from drivers rear behind fuel cap

2008 Vauxhall Corsa 1.2 16v SXi
Car: Vauxhall Corsa
Year: 2008
Variant: 1.2 16v SXi
Categories: Leaks & Noises
Iv had this sound for a couple of months and it is a constant buzzing/whining sound coming from behind where my fuel cap is, I believe it could bet fuel pump from different symptoms iv read of other people vehicles. I start up the car n u here it straight away inside the car and if your close enough to the noisy area you can here it outside the car, I have noticed some days I get a lag in power in all gears but somedays it's fine, but the noise never stops it is constant, then goes off as soon as the engine is turned off. Any ideas?
Problem added: Jan 10, 2015 (9 years ago)
Does sound like noisy fuel pump .
Answered Jan 10, 2015 (9 years ago)

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