V6 engines Ford F150

This Chapter is devoted to in-vehicle repair procedures for the 2.7L turbocharged EcoBoost V6, 3.3L Duratec V6, 3.5L Duratec non-turbocharged V6 and the 3.5L turbocharged EcoBoost V6 engines.
The 2.7L engines utilize a compacted graphite iron cylinder block, while the 3.3L and the 3.5L engines utilize a cast-aluminum block.
All have six cylinders arranged in a V-shape at a 60-degree angle between the two banks.
The cylinder heads on all models are cast-aluminum and the valve actuation is via two overhead camshafts in each cylinder head with four valves per cylinder (one for each intake valve and one for each exhaust valve).
The principal differences are that the 2.7L and 3.5L turbocharged engines are equipped with direct injection of fuel into the cylinders and the use of two turbochargers, while the 3.3L Duratec V6 — 3.5L Duratec V6 non-turbocharged engines do not have direct injection or turbochargers.
Information concerning engine removal and installation and engine overhaul can be found in General engine overhaul procedures.
The following repair procedures are based on the assumption that the engine is installed in the vehicle.
If the engine has been removed from the vehicle and mounted on a stand, many of the steps outlined in this Chapter will not apply.

Repair operations possible with the engine in the vehicle
Valve clearance – check and adjustment
Valve covers – removal and installation
Intake manifold(s) – removal and installation
Exhaust manifolds – removal and installation
Crankshaft pulley and crankshaft front seal – replacement
Cylinder heads – removal and installation
Engine front cover – removal and installation
Timing chains and sprockets – removal and installation
Camshafts and tappets/roller followers and lash adjusters – removal and installation
Oil pan – removal and installation
Oil pump – removal and installation
Driveplate – removal and installation
Rear main oil seal – replacement
Engine mounts – check and replacement

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