Bank 1 fuel mixture is too rich during off-idle/part-throttle operation.
SYMPTOMS
- Check-engine light
- Fuel smell
- Worse economy
LIKELY CAUSES
- Leaking injector
- High fuel pressure
- Faulty MAF
DIAGNOSIS STEPS
- Read fuel trims at off-idle
- Check fuel pressure
- Inspect injectors
RELATED PARTS
- Fuel injectors
- MAF sensor