To remove the high-pressure fuel pump, start by disconnecting the cable from the negative battery terminal and relieving the fuel system pressure. Then, disconnect the low-pressure feed line and use a flare nut wrench to unscrew the high-pressure fuel line fittings from the pump and
Fuel Rail. Disconnect the electrical connector from the high-pressure fuel pump and remove the pump by unscrewing the bolts. Always replace the bolts and O-ring. Before installing the pump, make sure the camshaft lobe is at its base circle and lubricate the pump roller with engine oil. Install the gasket and bolts. To install the pump, set it into the cylinder head and tighten the bolts evenly to the proper torque specifications. The remaining steps involve reversing the removal process, including cleaning the high-pressure fuel line fittings, applying clean engine oil to the threads, and tightening the fittings to the correct torque specifications. Finally, reconnect the cable to the negative battery terminal, start the engine, and check for fuel leaks.