21
TROUBLESHOOTING – ENGINE
CODE LIST OF POSSIBLE CAUSES
1. Battery capacity low. 33. Piston rings not free or are worn or broken.
2. Bad electrical connections. 34. Valve stems and/or guide worn.
3. Fault in starter motor. 35.West type air cleaner too full or wrong oil used.
4. Fault in starter motor. 36. Crankshaft bearings worn or damaged..
5. Wrong grade of lubricating oil. 37. Not enough lubricating oil in the pump.
6. Low engine speed from starter motor. 38. Gauge not correct.
7. Stop control fault. 39. Lubricating oil pump worn.
8. Restriction in fuel lift pipe. 40. Relief valve not free to close.
9. Fault in fuel lift pump. 41. Relief valve not free to open.
10. Dirty fuel filter element. 42. Relief valve spring broken.
11. Restriction in air filter or induction system. 43. Fault in suction pipe of lubricating oil pump.
12. Air in fuel system. 44. Dirty lubricating oil filter element.
13. Fault in fuel injection pump. 45. Piston damaged.
14. Fault in atomizers or not correct type. 46. Piston height not correct.
15. Cold start equipment not used correctly. 47. Fan damaged.
16. Fault in cold start equipment. 48. Fault in engine mounting (housing).
17. Broken fuel injection pump drive. 49. Flywheel housing or flywheel not aligned
18. Fuel injection pump timing not correct. correctly.
19. Valve timing not correct. 50. Fault in thermostat or wrong type.
20. Bad compression. 51. Restriction in coolant passages.
21. restriction in fuel tank vent. 52. Water pump drive belt loose.
22. Type or grade of fuel not correct. 53. Restriction in radiator.
23. Restriction of engine speed control movement. 54. Fault in water pump.
24. Restriction in exhaust pipe. 55. Restriction in breather pipe.
25. Cylinder head gasket leaks. 56. Damaged valve stem oil seals (where used).
26. Engine temperature too high. 57. Not enough coolant in system.
27. Engine temperature too low. 58. Restriction in sump strainer.
28. Valve tip clearances not correct. 59. Valve spring broken.
29. Valves not free. 60. Fault in exhaust or vacuum pipe leakage.
30. Wrong high pressure pipes. 61. Turbo charger impeller damage, or dirty impeller.
31. Worn cylinder bores. 62. Turbo charger lubricating oil seal leaks.
32. Valves and seats do not seal correctly. 63. Induction system leaks (turbo charged engines.)
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