Symptoms - Engine Mechanical - LE5 or LE9
Strategy Based Diagnostics
- Perform the Diagnostic System Check - Vehicle before using the symptom tables, if applicable.
- Review the system operations in order to familiarize yourself with the system functions. Refer to
Disassembled Views : LE5 or LE9 , Engine Component Description : LE5 or LE9 , and Lubrication Description : LE5 or LE9 .
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.
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:
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Base Engine Misfire without Internal Engine Noises : LE5 or LE9 |
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Base Engine Misfire with Abnormal Internal Lower Engine Noises : LE5 or LE9 |
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Base Engine Misfire with Abnormal Valve Train Noise : LE5 or LE9 |
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Base Engine Misfire with Coolant Consumption : LE5 or LE9 |
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Base Engine Misfire with Excessive Oil Consumption : LE5 or LE9 |
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Engine Noise on Start-Up, but Only Lasting a Few Seconds : LE5 or LE9 |
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Upper Engine Noise, Regardless of Engine Speed : LE5 or LE9 |
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Lower Engine Noise, Regardless of Engine Speed : LE5 or LE9 |
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Engine Will Not Crank - Crankshaft Will Not Rotate : LE5 or LE9 |
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