B1C Checking the Residual Pressure

B1C Checking the residual pressure

Start the fuel pump by setting the switch to "ON".

Read off the line pressure. See "Fuel Pressure, Specifications" for the correct pressure. Specifications

Stop the fuel pump by setting the switch to "OFF". The pressure should now drop immediately by 0.1 - 0.2 bar (1.5-2.9 psi). If the residual pressure drops by more than this after about 10 minutes, check for leakage in the fuel pressure regulator and the fuel pump non-return valve.

Check the pressure and flow delivered by the fuel pump.