4-18 SHB 28Z3 EN – Edition 2.0 * 28z3s410.fm
Engine
4.20 Engine trouble
Problem Possible causes
Engine does not start or is not easy to start
Wrong SAE grade of engine lubrication oil
Fuel grade does not comply with specifications
Defective or flat battery
Loose or oxidised cable connections in starter circuit
Defective starter, or pinion does not engage
Wrong valve clearance
Defective fuel injector
Defective starting relay
Defective glow plug
Defective solenoid switch
Defective fuse
Dirty fuel filter
Very dirty air filter
Cutoff solenoid does not attract
High pressure created immediately in the hydraulic system
Air in fuel system
Engine starts, but does not run smoothly or faultless
Fuel grade does not comply with specifications
Wrong valve clearance
Injection line leaks
Defective fuel injector
Dirty fuel filter
Air in fuel system
Engine overheats. Temperature warning system responds
Lube oil level too low
Lube oil level too high
Dirty air filter
Dirty radiator fins
Defective fan, torn or loose V-belt
Resistance in cooling system too high, flow capacity too low
Defective fuel injector
Not enough coolant
Defective coolant pump
Cooling system leaks
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