- Symptom List

Symptoms - Engine

Strategy Based Diagnostics
1. Perform the Diagnostic System Check - Computer and 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, Engine Component Description, Lubrication Description, New Product Information, and Drive Belt System Description. Engine Component Description Description and Operation 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 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 Compression Test Compression Check
- 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
- Oil Consumption Diagnosis Oil Consumption Diagnosis
- Oil Pressure Diagnosis and Testing Testing and Inspection
- Oil Leak Diagnosis Oil Leak Diagnosis
- Cylinder Leakage Test Cylinder Leakage Test
- 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