Thread: Noisy Fuel Pump
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Roger 04 RT Roger 04 RT is offline
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Join Date: Oct 2015
Location: Naples, FL and Cape Cod
Posts: 143
Just a note on the R1150, R1100S fuel pump. It always pumps the same amount of fuel, all the time (when the engine is running). That’s true at idle, cruise, WOT and every AFXIED setting. It always pumps about 2 liters per minute at 3 bar (43.5 psi). What changes is the amount of fuel returning to the tank (at low pressure), which is the unused amount.

So if a pump is making noise, it’s only the pump that’s in question, unless the fuel pressure regulator is not working properly, the fuel filter is plugged, or a QD connection is not fully seated.
Old 02-11-2018, 08:19 AM
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