Hesitation During Acceleration or Deceleration

1. Intake air leak
2. Air flow sensor arm or fuel distributor piston not moving freely
3. Differential pressure not within specification
4. Uneven injection quantities
5. Improper idle speed setting
6. Warm up enrichment not within specification
7. Acceleration enrichment not within specification
8. Full throttle switch defective or incorrectly adjusted
9. Defective idle stabilization