Common Symptoms
- Check Engine Light illuminated
- Rough idle or engine misfire
- Poor fuel economy
- Loss of power or hesitation under acceleration
- Engine runs rough on startup or when cold
- Raw fuel smell from exhaust
Most Likely Root Causes
- Faulty fuel injector on cylinder 7
- Open or short circuit in injector wiring harness
- Corroded or damaged injector connector
- Failed fuel injector driver circuit in PCM
- Loose or broken wiring at injector connector
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Component Location
Cylinder 7 fuel injector is located on the engine block corresponding to the seventh cylinder in the firing order, typically on V8 or inline-8 engines.
Manufacturer Notes
Some manufacturers use a sequential numbering system where cylinder 7 position varies based on engine configuration and firing order.
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