Why is my Fuel Pump making noise?
Abnormal noises of the Fuel Pump usually result from internal mechanical wear or system incompatibility issues. According to the SAE research report, in case the gap between the pump casing and impeller is greater than 0.3mm (factory-set value is between 0.1-0.15mm), the variation of flow will generate the high-frequency noise of 30-50 decibels (dB), and …