- Symptom List

Symptoms - Engine Mechanical

Strategy Based Diagnostics
1. Perform Diagnostic System Check - Engine Controls before using the symptom tables if applicable.
2. Review the system operations in order to familiarize yourself with the system functions.
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.

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 Compression Test: Testing and Inspection
^ 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
^ Oil Consumption Diagnosis: Oil Consumption Diagnosis
^ Oil Pressure Diagnosis and Testing: Testing and Inspection
^ Oil Leak Diagnosis: Oil Leak Diagnosis
^ Drive Belt Chirping Diagnosis: Drive Belt Chirping
^ Drive Belt Squeal Diagnosis: Drive Belt Squeal
^ Drive Belt Whine Diagnosis: Drive Belt Whine
^ Drive Belt Rumbling Diagnosis: Drive Belt Rumbling
^ Drive Belt Vibration Diagnosis: Drive Belt Vibration
^ Drive Belt Falls Off Diagnosis: Drive Belt Falls Off
^ Drive Belt Excessive Wear Diagnosis: Drive Belt Excessive Wear
^ Drive Belt Tensioner Diagnosis: Testing and Inspection