B1B Checking the Fuel Pressure Regulator
B1B Checking the fuel pressure regulator1 Connect pressure testing equipment 83 93 514 to the inlet and outlet of the fuel pressure regulator. Tie up the pressure gauge so that it hangs vertically to obviate reading errors.
Connect either the cooling system tester or the vacuum pump to testing equipment 83 93 514.
2 Start the fuel pump by setting the switch to "ON". The line pressure should now rise to that specified in "Fuel Pressure, Specifications". Specifications
Use the vacuum pump to increase the vacuum in the fuel pressure regulator. The line pressure should now drop by as much as corresponds to the movement of the needle on the pressure gauge, see "Fuel Pressure, Specifications". Specifications
Use the cooling system tester to raise the pressure in the fuel pressure regulator. The line pressure should now increase by as much as corresponds to the movement of the needle on the pressure gauge, see "Fuel Pressure, Specifications". Specifications