4-34 SHB 803 en – Edition 2.4 * 803s410.fm
Engine
4.35 Engine trouble
Problem Possible causes
Engine does not start or is not easy to start
Incorrect engine oil
Fuel grade does not comply with specifications
Malfunctioning or empty battery
Loose or oxidized cable connections in starter circuit
Malfunctioning starter, or pinion does not engage
Wrong valve clearance
Malfunctioning intake or exhaust valve
Malfunctioning starting relay
Malfunctioning glow plug
Malfunctioning solenoid switch
Malfunctioning fuse
Dirty fuel filter
Very dirty air filter
Cutoff solenoid does not attract
Air in fuel system
Stuck or broken piston ring
No fuel
Poor injection
Stuck or malfunctioning system components
Water or air in fuel system
Foreign bodies in combustion chamber
Engine starts, but does not run smoothly or faultless
Fuel grade does not comply with specifications
Wrong valve clearance
Injection line leaks
Malfunctioning fuel injector
Dirty fuel filter
Air or water in fuel system
Incorrect setting of speed control
Poor fuel supply to injection pump
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