Description And Operation: Engine

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

This article covers general procedures and diagnosis and testing of the engine system, except for exhaust emission control devices, which are covered in the SYSTEM COMPONENTS TESTING and/or SELF DIAGNOSTICS articles.

The engine incorporates the following features:

a closed positive crankcase ventilation (PCV) system. For additional information, refer to POSITIVE CRANKCASE VENTILATION .
an exhaust emission control system. For additional information, refer to CATALYST & EXHAUST SYSTEMS .
an evaporative emission control system. For additional information, refer to EVAPORATIVE EMISSION SYSTEMS .

Some engines incorporate a fail-safe cooling system. DESCRIPTION AND OPERATION .

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. Refer to ENGINE CODE LOCATION .

For complete vehicle and engine identification codes, refer to VEHICLE IDENTIFICATION NUMBER DESCRIPTION .