Description And Operation: Engine

WARNING: This page is about a different car, the 2003 Mercury Marauder, 2003 Mercury Grand Marquis, and 2003 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: This section contains information, steps and procedures that may not be specific to your engine.

This section covers general procedures and diagnosis and testing of the engine system, except for exhaust emission control devices, which are covered in the Powertrain Control/Emissions Diagnosis Manual.

The engine incorporates the following features:

a closed positive crankcase ventilation (PCV) system. For additional information, refer to THEORY & OPERATION - CNG, FLEX-FUEL & GASOLINE .
an exhaust emission control system. For additional information, refer to THEORY & OPERATION - CNG, FLEX-FUEL & GASOLINE .
an evaporative emission control system. For additional information, refer toEVAPORATIVE EMISSION SYSTEMS .

The engine, fuel system, ignition system, emissions system and exhaust system all affect exhaust emission levels and must be maintained according to the maintenance schedule.

Correct engine identification is required to order parts.