Initial Inspection and Diagnostic Overview

WARNING: To avoid personal injury, do not unscrew the coolant pressure relief cap while the engine is operating or hot. The cooling system is under pressure; steam and hot liquid can come out forcefully when the cap is loosened slightly.

1. Verify the customer concern by operating the engine to duplicate the condition.

Visual Inspection Chart:

2. Inspect to determine if any of the following mechanical or electrical concerns apply.

3. If the inspection reveals an obvious concern that can be readily identified., repair it as necessary.
4. If the concern remains after the inspection, determine the symptom(s) and go to the Symptom Chart. Symptom Related Diagnostic Procedures