- Symptom List

Symptoms - Engine Mechanical

Strategy Based Diagnostics
1. Perform A Diagnostic System Check in Engine Controls before using the symptom tables (if applicable).
Initial Inspection and Diagnostic Overview
Symptom Related Diagnostic Procedures


2. Review the system operations in order to familiarize yourself with the system functions.
Description and Operation

All diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for repairing all systems. The diagnostic flow may always be used in order to resolve a system problem. The diagnostic flow is the place to start when repairs are necessary.

For a detailed explanation, refer to Strategy Based Diagnosis.
Initial Inspection and Diagnostic Overview


Visual/Physical Inspection
Inspect for aftermarket devices which could affect the operation of the Engine.

Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Check for the correct oil level, proper oil viscosity, and correct filter application.

Verify the exact operating conditions under which the concern exists. Note factors such as engine RPM, ambient temperature, engine temperature, amount of engine warm-up time, and other specifics.

Compare the engine sounds (if applicable) to a known good engine and make sure you are not trying to correct a normal condition.

Intermittent
Test the vehicle under the same conditions that the customer reported in order to verify the system is operating properly.



Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

* Base Engine Misfire without Internal Engine Noises
Base Engine Misfire Without Internal Engine Noises

* Base Engine Misfire with Abnormal Internal Lower Engine Noises Base Engine Misfire With Abnormal Internal Lower Engine Noises

* Base Engine Misfire with Abnormal Valve Train Noise
Base Engine Misfire With Abnormal Valve Train Noise

* Base Engine Misfire with Coolant Consumption
Base Engine Misfire With Coolant Consumption

* Base Engine Misfire with Excessive Oil Consumption
Base Engine Misfire With Excessive Oil Consumption


* Engine Noise on Start-Up, but Only Lasting a Few Seconds
Engine Noise on Start-Up, But Only Lasting A Few Seconds

* Upper Engine Noise, Regardless of Engine Speed
Upper Engine Noise Regardless of Engine Speed

* Lower Engine Noise, Regardless of Engine Speed
Lower Engine Noise Regardless of Engine Speed

* Engine Noise Under Load
Engine Noise Under Load

* Engine Will Not Crank - Crankshaft Will Not Rotate
Engine Will Not Crank - Crankshaft Will Not Rotate

* Fuel in Engine Oil
Fuel In Engine Oil

* Drive Belt Chirping
Drive Belt Chirping

* Drive Belt Squeal
Drive Belt Squeal

* Drive Belt Whine
Drive Belt Whine

* Drive Belt Rumbling
Drive Belt Rumbling

* Drive Belt Vibration
Drive Belt Vibration

* Drive Belt Falls Off
Drive Belt Falls Off

* Drive Belt Excessive Wear
Drive Belt Excessive Wear

* Drive Belt Tensioner
Testing and Inspection