19. Insufficient air supply to engine:
- blocked air filter
- air leakage between turbocharger and engine inlet manifold
- fouled compressor section in turbocharger
- faulty turbocharger
- poor engine bay ventilation
20. Excessive coolant temperature
21. Too low coolant temperature
22. Too low oil level
23. Faulty / wrong propeller
24. Faulty engine mounting
25. Coolant level too low
26. Air in the freshwater system
27. Drive belt broken/slips
28. Faulty circulation pump
29. Closed seawater inlet
30. Blocked seawater inlet/pipe/filter
31. Defective impeller in seawater pump
32. Defective thermostat
33. Blocked heat exchanger insert
34. Blocked charge air cooler
35. Too high oil level
36. Water entry into engine
37. High back pressure in exhaust system
38. Faulty engine speed sensor
39. Stored fault codes
40. Non-return valve in feed pump leaks
Fault Handling
7748887 04-2008 43
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