There are a number of causes of a noisy fuel pump, many of which may be resolved through a service or repair – whilst others may require a fuel pump replacement. Some of the most common causes of noise within a tank fuel pump include;
Damaged vanes -any damaged vanes causing noise can be replaced relatively inexpensively.
Blocked filters – noise may be a sign of a blocked or full filter or inlet. Whilst filters should be replaced, inlets should be accessed and cleaned.
Worn or damaged bearings – this is a more significant issue and typically requires inspection by a professional.
Air leaks – most commonly found on the cover plate, air leaks are a common source of noise. This may be resolved by tightening the cover plate, or replacing the o-ring seal.
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