For the lower intake manifold service, release the fuel system pressure first. After removing the upper intake manifold, make sure to block off the openings with something to stop foreign things from getting into the engine. Take out the fuel line from the engine and drain the engine's cooling system. Unplug the fuel injector/
Coolant Temperature Sensor wire harness connector, remove both the upper and lower hoses from the intake manifold and remove the heater supply hose. Unbolt the bracket from the engine using the lower manifold support bracket bolts and loosen one of the lower support bracket bolts. Unplug the fuel injector harness and remove all the bolts securing the
Power Steering Reservoir to the manifold, while leaving the line connected to the reservoir. Remove the fasteners holding the lower intake manifold and take it off the engine to examine it with a straight edge, checking for less than 0.15 mm of difference in flatness within 300 mm (60 in.). If you detect cracks or stretching, replace the manifold. Once any items removed are installed, please torque the fuel rail bolts to 22 Nm (200 in. lbs.), coolant outlet connector bolts to 28 Nm (250 in. lbs.) and the coolant temperature sensor to 7 Nm (60 in. lbs.). Set a new gasket on the cylinder head and fit the lower manifold, using a 5 mm socket's Nm/inch.lbs. of force, then repeat for every bolt while ensuring they are tightened to 28 Nm (250 in. lbs.) in the right order. Put in the bolts that hold the lower intake manifold support and tighten each bolts to 28 Nm (250 in. lbs.) on the intake and 54 Nm (40 ft. lbs.) on the engine block. Connect the power steering reservoir to the manifold and attach it using bolts, after which connect the fuel line and the cable ends of the coolant temperature sensor/fuel injector wiring harness. After that, put the radiator upper hose in place, the heater supply hose, then the upper intake manifold and begin filling the cooling system.