- Symptoms - Engine Mechanical

Symptoms - Engine Mechanical

Strategy Based Diagnostics

1. Perform A Diagnostic System Check in Engine Controls before using the symptom tables, if applicable.
2. Review the system operations in order to familiarize yourself with the system functions. Refer to Disassembled Views ([1][2]Engine) ,Engine Component Description (Description and Operation) ,Drive Belt System Description (Description and Operation) ,Lubrication Description (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 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 (Component Tests and General Diagnostics)
* Oil Pressure Diagnosis and Testing (Component Tests and General Diagnostics)
* Oil Leak Diagnosis (Component Tests and General Diagnostics)
* Drive Belt Chirping, Squeal, and Whine Diagnosis (Drive Belt Chirping, Squeal, and Whine Diagnosis)
* Drive Belt Rumbling and Vibration Diagnosis (Drive Belt Rumbling and Vibration Diagnosis)
* Drive Belt Falls Off and Excessive Wear Diagnosis (Drive Belt Falls Off and Excessive Wear Diagnosis)
* Drive Belt Tensioner Diagnosis (Testing and Inspection)