Ford Falcon. Manual - part 123
303-01b-6
Engine — 5.4L (3V)
303-01b-6
DESCRIPTION AND OPERATION
Valve Train
Engine
The valve train operates as follows:
The 5.4L (3V) is a V-8 engine with the following
Ball tip hydraulic lash adjusters provide automatic
features:
lash adjustment.
dual overhead camshafts
Roller followers ride on the camshaft lobes,
three valves per cylinder
transferring the up-and-down motion of the
sequential multiport fuel injection (SFI)
camshafts to the valves in the cylinder heads.
an aluminum intake manifold
Positive Crankcase Ventilation System
aluminum cylinder heads
All engines are equipped with a closed-type positive
a cast iron, 90-degree V-cylinder block
crankcase ventilation system recycling the crankcase
individually chain-driven camshafts with a
vapors to the upper intake manifold.
hydraulic timing chain tensioner on each timing
chain
Lubrication System
the electronic ignition system with eight ignition
The engine lubrication system operates as follows:
coils
Oil is drawn into the oil pump through the oil
Identification
pump screen cover and tube in the sump of the oil
pan.
Always refer to these labels when new parts are
Oil enters the main oil gallery where it is
required or when checking engine calibrations. The
distributed to the crankshaft main journals and to
engine parts often differ within a CID family.
both cylinder heads.
Verification of the identification codes will make sure
that the correct parts are obtained. These codes
From the main journals, the oil is routed through
contain all the pertinent information relating to the
cross-drilled passages in the crankshaft to
dates, optional equipment and revisions. The Ford
lubricate the connecting rod bearings. Controlled
Master Parts Catalog contains a complete listing of
leakage through the crankshaft main bearings and
the codes and their application.
connecting rod bearings is slung radially outward
to cool and lubricate the cylinder walls as well as
Code Information
the entire connecting rod, piston and piston rings
assembly.
The engine code information label, located on the side
of the LH valve cover towards the rear, contains the
The left cylinder head is fed from a drilling into the
following:
supply passage feeding the main gallery at the
front of the cylinder block. The right cylinder head
engine build date
is fed from a drilling into the rear of the main
engine plant code
gallery. Main gallery pressure is reduced as it
engine code
enters the cylinder head galleries through fixed
serviceable orifices located at the upper part of
Induction System
the feed passages. It is this reduced pressure in
The sequential multiport fuel injection (SFI) provides
the cylinder head galleries which feeds the
the fuel/air mixture needed for combustion in the
camshaft journals, the hydraulic lash adjusters
cylinders. The eight solenoid-operated fuel injectors:
and the primary and secondary timing chain
tensioners.
are mounted in the fuel injection supply manifold
and the intake manifold above the cylinder heads.
The camshaft lobe and roller followers are
lubricated by splash created through valve train
meter fuel into the air intake stream in accordance
operation.
with engine demand.
are positioned so that their tips direct fuel just
Oil Pump
ahead of the engine intake valves.
The lubrication system of the 5.4L (3V) engine is
are connected in series with the fuel pressure
designed to provide optimum oil flow to critical
regulator.
components of the engine through its entire operating
supply fuel from the fuel tank by a fuel pump
range. The heart of the system is a positive
mounted in the fuel tank.
displacement internal gear oil pump using top seal
rotors.
A constant fuel pressure drop is maintained across
the fuel injectors by the fuel pressure regulator. The
Generically this design is known as a gerotor pump,
fuel pressure regulator:
which operates as follows:
is positioned upstream from the fuel injectors on
The oil pump is mounted on the front face of the
the fuel injection supply manifold.
cylinder block.
G89771 en