Cummins engine is difficult to start or can not start (exhaust smoke)

Cummins engine is difficult to start or can not start (exhaust smoke)

1. tank with low fuel level and filler fuel tank.

2. excessive vehicle parasitic load, check whether the vehicle brake lag, the transmission failure, cooling fan cycle time and engine transmission.

3. cold weather requires the use of starting or starting auxiliary device failure, check whether the starting auxiliary device works properly.

4. the engine is dragging too low, checking the engine's rotational speed with a hand held tachometer or service software.

5. current electronic fault codes are counted at high frequencies for current or non current fault codes

6. electronic control module (ECM) calibration fault

7. engine idle speed setting is too low (electronic control fuel system)

8. engine speed sensor or its circuit failure

9. fuel oil pump inlet filter screen blocked

9. fuel oil pump failure

10. fuel pump overflow valve failure

11. fuel shut-off solenoid valve or circuit failure (electronically controlled fuel system)

12. there is air in the fuel system

13. the fuel level does not match the type of application or the fuel quality is too poor

14. intake system resistance exceeds technical specification

15. exhaust system resistance does not conform to technical specifications

16. the straight way check valve is incorrect or the part number is incorrect

The 17. top setting mechanism is not adjusted properly

18. injector O ring damage or loss

19. fuel oil contains debris