Common Symptoms
- Check engine light illuminated
- Rough idle or engine misfire
- Loss of power or hesitation during acceleration
- Increased fuel consumption
- Engine runs rough when cold
- Strong fuel odor from exhaust
Most Likely Root Causes
- Faulty fuel injector on cylinder 3
- Damaged or corroded wiring harness to injector
- Poor electrical connection at injector connector
- Failed injector driver circuit in ECM
- Short to ground or power in injector circuit
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Component Location
Cylinder 3 fuel injector is located in the fuel rail assembly on the intake side of the engine corresponding to the third cylinder in firing order.
Manufacturer Notes
Some manufacturers require specific injector coding or programming procedures when replacing fuel injectors to ensure proper operation.
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