Engine Will Not Start Hot or Starts Poorly

1. Low or intermittent output from electric fuel pump.
2. Intake air leak
3. Air flow sensor arm or fuel distributor piston not moving freely
4. Incorrect air flow sensor plate position
5. System pressure not within specification
6. Differential pressure not within specification
7. Leaking fuel system, low residual pressure
8. Leaking injectors, opening pressure too low
9. Improper idle speed setting
10. Idle switch misadjusted or defective
11. Defective idle stabilization