Ford Cobra 4.6L (4V) User's Manual

Ford Automobile Parts User's Manual - Cobra 4.6L (4V).
Download
Page  of 15
4.4, 1270 votes
background image

303-01C-1

303-01C-1

Engine — Cobra 4.6L (4V)

DESCRIPTION AND OPERATION

Induction System

Engine

The sequential multiport fuel injection (SFI)

WARNING: Do not operate the engine

provides the fuel/air mixture needed for combustion

with the hood open until the fan blade has been

in the cylinders. The eight solenoid-operated fuel

first examined for possible cracks and separation.

injectors:

The 4.6L (4V) (281 CID) Cobra engine is a V-8

• are mounted in the lower intake manifold.

with the following features:

• meter fuel into the air intake stream in accordance

• intercooled supercharger

with engine demand.

• dual overhead camshafts

• are positioned so that their tips direct fuel just

• four valves per cylinder

ahead of the engine intake valves.

• sequential multiport fuel injection (SFI)

• are connected in series with the fuel pressure

sensor.

• an aluminum intake manifold

• supply fuel from the fuel tank with a fuel pump

• aluminum cylinder heads

mounted in the fuel tank.

• a cast aluminum, 90-degree V- cylinder block

A constant fuel pressure drop is maintained across

•  individually chain-driven camshafts with a

the fuel injectors by the fuel pressure sensor. The

hydraulic timing chain tensioner on each timing

fuel pressure sensor:

chain

• is positioned upstream from the fuel injectors on

• the electronic ignition system with eight ignition

the fuel injection supply manifold.

coils

Valve Train

Identification

The valve train operates as follows:

Always refer to these labels when replacement parts
are necessary or when checking engine calibrations.

• ball-tip hydraulic lash adjusters provide automatic

The engine parts often differ within a CID family.

lash adjustment.

Verification of the identification codes will ensure

• roller followers ride on the camshaft lobes,

that the correct parts are obtained.  These codes

transferring the up-and-down motion of the

contain all the pertinent information relating to the

camshafts to the valves in the cylinder heads.

dates, optional equipment and revisions. The Ford
Master Parts Catalog contains a complete listing of

Positive Crankcase Ventilation System

the codes and their application.

All engines are equipped with a closed-type positive

Code Information

crankcase ventilation system recycling the crankcase
vapors to the upper intake manifold.

The engine code information label, located on the
side of the valve cover and the front side of the

Lubrication System

valve cover, contains the following:

The engine lubrication system operates as follows:

• engine build date

• oil is drawn into the oil pump through the oil

• engine plant code

pump screen cover and tube in the sump of the

• engine code

oil pan.

• oil is pumped through the oil bypass filter on the

Exhaust Emission Control System

left front side of the cylinder block.

Operation and necessary maintenance of the exhaust

• oil enters the main oil gallery where it is

emission control devices used on this engine is

distributed to the crankshaft main journals and to

covered in the Powertrain Control/Emissions

both cylinder heads.

Diagnosis (PC/ED) manual.

Copyright 

 2002, Ford Motor Company

Last updated: 6/14/2002

2003 Mustang, 8/2002 

0.505061s