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Knocking and Load humming noise from fuel pump 900 1994

i have a 1994 940 Non-turbo and I've been experience some bad knocking, coincidentally my fuel pump (under the drivers seat) has become really really noisy. i read that the main fuel pump may become noisy if the intake fuel pump stops working. how can i find out whether its the intake pump or main pump. appreciate the help.






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New Knocking and Load humming noise from fuel pump [900][1994]
posted by  gapbrother  on Thu Aug 10 08:09 CST 2006 >


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