The engine runs erratically
Checks by the user
- Fault in stop control
- Restriction in a fuel pipe
- Fault in fuel lift pump
- Dirty fuel filter element
- Restriction in filter/cleaner or air induction system
- Air in fuel system
- Fault in atomisers or atomisers of an incorrect type
- Fault in cold start system
- Restriction in fuel tank vent
- Restricted movement of engine speed control
- Engine temperature is too high
- Valve tip clearances are incorrect
- Too much oil or oil of wrong specification used in wet type oil cleaner
Check by the workshop personnel
- Fault in fuel injection pump
- Bad compression
- Valves are not free
- Wrong high-pressure pipes
- Piston rings are not free or they are worn or broken
- Piston is damaged
- Valve spring is broken
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