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Ford Focus Service Manual: Engine - 2.0L - Description and Operation

Ford Focus Service Manual / Powertrain / Engine / General Information / Engine - 2.0L - Description and Operation

The 2.0L 4-cylinder engine has the following features:

The 2.0L engine is a 4 valve-per-cylinder, dual overhead camshaft engine. The engine uses a coil-on-plug ignition system. The cylinder block is made of aluminum and the bearing caps are integrated into the ladder assembly. An aluminum oil pan bolts to the bottom of the lower cylinder block and to the transmission to provide greater strength. The camshafts are mounted in the cylinder heads and act against valve tappets to open and close the valves. The camshafts are driven off the front of the cylinder head by one timing chain. The chain is driven by a sprocket that is located on the crankshaft. The piston assembly is an aluminum piston with a cast iron connecting rod. The oil pump is driven by the crankshaft via a dedicated chain that is driven by the same sprocket that drives the timing chain.

Engine Identification

Always refer to these labels when installation of new parts is necessary or when checking engine calibrations. The engine parts often differ within a CID family. Verification of the identification codes will make sure the correct parts are obtained. These codes contain all the pertinent information relating to the dates, optional equipment and revisions.

Engine Code Information Label

The engine code information label, located on the front side of the valve cover, contains the following:

Item Description
1 Engine part number
2 Bar code
3 Dearborn engine plant
4 Engine displacement
5 Bar code
6 Running number
7 Engine build date (DDMMYY)
8 Plant shift line

Engine Cylinder Identification

Exhaust Emission Control System

Operation and necessary maintenance of the exhaust emission control devices used on this engine are covered in the Powertrain Control/Emissions Diagnosis (PC/ED) manual.

Induction System

The SFI provides the fuel/air mixture needed for combustion in the cylinders. The 4 solenoid-operated fuel injectors:

A constant fuel pressure is maintained across the fuel injectors by the fuel pressure sensor. The fuel pressure sensor is positioned upstream from the fuel injectors on the fuel injection supply manifold.

PCV System

All engines are equipped with a closed-type PCV system recycling the crankcase vapors to the intake manifold.

Lubrication System

The engine lubrication system operates as follows:

All engines Assembly
NOTE: If the oil squirters are being reused, they must be installed in the same location as marked during disassembly. NOTE: The front bulkhead does not have an oil squirter. Install th ...

Engine - 2.0L - Disassembly
Special Tool(s) Alignment Plate, Camshaft 303-465 (T94P-6256-CH) Holding Tool, Crankshaft Damper 303-1416 Holding Tool, Flywhe ...

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Ford Focus Diagnostic Parameters Identification (PID) Chart
Using Output State Control and Accessing PIDs To confirm that the output state control value was sent by the scan tool and the PCM has accepted the output state control substitution, a corresponding PID or PIDs for each output state control parameter should be monitored. Additional PIDs shou ...

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