Remove the engine covers and the suspension cross brace. Relieve the fuel system pressure and disconnect the cable from the negative battery terminal. Remove the intake manifold and disconnect the low pressure feed line from the pump. The manufacturer states that any time the fuel lines are removed from the fuel pump or
Fuel Rails they should be replaced. Using a flare-nut wrench, unscrew the high-pressure fuel line fittings. Raise the front of the vehicle and support it securely on jackstands. Disconnect the electrical connector from the high-pressure fuel pump. Working from under the vehicle, disconnect the fuel pump electrical connector. Remove the high-pressure fuel pump bolts and remove the pump. Always replace the bolts and O-ring. Loosen the bolts a little at a time until all of the spring pressure on the pump lifter is relieved to avoid damaging the pump or stripping the threads. With the pump removed, rotate the engine by hand and make sure the camshaft lobe for the pump's roller litter is at its base circle before trying to install the pump. Lubricate the pump roller lifter with engine oil and install the litter and gasket. Set the pump into the bore in the cylinder head and tighten the bolts evenly. As the pump bolts are tightened, it will get harder to tighten the bolts until the spring in the pump is compressed. Tighten the bolts to the torque. The remainder of installation is the reverse of removal. Clean the high-pressure fuel line fittings on the fuel rails, then apply a little clean engine oil to the threads. Install the new high-pressure fuel lines, tightening the fittings to the torque. Reconnect the cable to the negative battery terminal, then start the engine and check for fuel leaks.