Engine System - General Information

Overview

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

NOTE: Specifications show the expected minimum or maximum condition. Refer to the appropriate Engine article for the correct specifications.

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

This service information covers general procedures and diagnosis and testing of the engine system, except for exhaust emission control devices, which are covered in the ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID) .

The engine incorporates the following features:

Crankcase ventilation or breather system.
Exhaust emission control system.
EVAP control system.

Some engines incorporate a fail-safe cooling system. REFER to Engine Cooling .

Correct engine identification is required to order parts. For complete vehicle and engine identification codes, REFER to Identification Codes .