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 Powertrain Control/Emissions Diagnostic procedures.

The engine incorporates the following features:

a closed positive crankcase ventilation (PCV) system. For additional information, Refer to REMOVAL, OVERHAUL & INSTALLATION .
an exhaust emission control system. For additional information, Refer to REMOVAL, OVERHAUL & INSTALLATION .
an evaporative emission control system. For additional information, Refer to REMOVAL, OVERHAUL & INSTALLATION .

Some engines incorporate a fail-safe cooling system. Refer to ENGINE COOLING .

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 the appropriate ENGINE article .