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The weather here is getting cooler these days (15 degree celcius).
The reason I mention that is because I am having an intermitant rough noise (quite loud and can be heard inside the car with all windows/doors closed) from where the fuel pump motor is? In front of the right rear wheel ('92 E32 735I). I wonder if this could be a dirty fuel filter? Or is it more likely that the fuel pump needing lubrication or something?
Thanks,
Richard