General Description

Engine

CAUTION: When repairing engines, all parts must be contamination free. If contamination/foreign material is present when repairing an engine, premature engine failure can occur.

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

This covers general procedures and diagnosis and testing of the engine system, except for exhaust emission control devices, which are covered in Computers and Control Systems.

The engine incorporates these features:
^ a closed positive crankcase ventilation (PCV) system. Refer to Emission Control Systems.
^ an exhaust emission control system. Refer to Emission Control Systems.
^ an evaporative emission control system. Refer to Evaporative Emissions System.

Some engines incorporate a fail-safe cooling system.

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. Refer to the scheduled Maintenance Guide.

Correct engine identification is required to order parts.

For complete vehicle and engine identification codes, refer to Vehicle/Application and ID.