- Symptom List

Symptoms - Engine Mechanical

Strategy Based Diagnostics
1. Perform the Diagnostic System Check - Vehicle in Vehicle DTC Information before using the symptom tables, if applicable. Diagnostic System Check - Vehicle
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 condition. The diagnostic flow is the place to start when repairs are necessary. For a detailed explanation, refer to Strategy Based Diagnosis.

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
^ Coolant in Combustion Chamber Coolant In Combustion Chamber
^ Coolant in Engine Oil Coolant In Engine Oil
^ Engine Compression Test Compression Check
^ Cylinder Leakage Test Cylinder Leakage Test
^ Oil Consumption Diagnosis Oil Consumption Diagnosis
^ Oil Pressure Diagnosis and Testing Testing and Inspection
^ Oil Leak Diagnosis Oil Leak Diagnosis
^ Crankcase Ventilation System Inspection/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