Repair 7

How to Replace the Exhaust Gasket on an F150 5 4

The Ford F150 is a full size pickup truck manufactured by the Ford Motor Company for over six decades, with its 5.4-liter V8 engine known for reliability and durability. The exhaust manifold gasket is an important component of the engine as it prevents the toxic exhaust fumes from reaching the interior of your pickup, and it needs to be replaced if it fails. The installation of the new exhaust manifold gasket is a straightforward process that will take no more than four hours.

Instructions

1

Raise and support the vehicle on the hoist. On full wheel drive models, remove the front wheel opening molding. Remove the front fender splash shield.

2

Unscrew the bolt and disconnect the brake booster vacuum hose and bracket. Remove the exhaust gas recirculation (EGR) valve-to-exhaust manifold tube. Disconnect the differential pressure feedback EGR sensor hoses. Detach the upper and lower EGR valve-to-exhaust manifold tube fittings.

3

Remove the nuts and the exhaust manifold. Remove and discard the old exhaust manifold gasket. Clean and inspect the exhaust manifold for damage and cracks.

4

Position the exhaust manifold gasket. Set in place the exhaust manifold and loosely install the nuts. Then tighten the nuts using the torque wrench. Apply 18 foot pounds of torque. Install the three-way catalytic converter to the exhaust manifold nuts. Connect the EGR valve-to-exhaust manifold tube. Tighten both fittings, starting at the top, in two stages. In the first stage hand tighten the fittings and then apply 30-44 foot pounds of torque.

5

Connect the differential pressure feedback EGR sensor hoses. Attach the brake booster vacuum hose, then bracket and tighten the nut, applying 89 inch pounds of torque. Install the front fender splash shield. On 4-by-4 vehicles, install the front wheel opening molding. Lower the vehicle.