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