Wacker Neuson 28Z3, Operator'S Manual

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4-2
OM 28Z3 US – Edition 2.0 * * 28Z3b410.fm
Troubleshooting
4.1 Engine trouble
Problem Possible causes See
Engine does not start or is not easy to start
Wrong SAE grade of engine lubrication oil 5-34
Fuel grade does not comply with specifications 5-34
Malfunctioning or flat battery 5-29
Loose or oxidized cable connections in starter circuit
Malfunctioning starter, or pinion does not engage
Wrong valve clearance
Malfunctioning fuel injector
Malfunctioning cutoff solenoid
Malfunctioning fuse
Engine starts, but does not run smoothly
Fuel grade does not comply with specifications 5-34
Dirty fuel filter
Wrong valve clearance
Injection line leaks
Malfunctioning fuel injector
Engine overheats. Temperature warning system
responds
Oil level too low 5-6
Oil level too high 5-6
Dirty air filter 5-12
Dirty cooler fins 5-8
Coolant level too low
Cooling system leaks
Malfunctioning fan, torn or loose V-belt 5-14
Resistance in cooling system too high, flow capacity too low
Malfunctioning fuel injector
Insufficient engine output
Oil level too high 5-34
Fuel grade does not comply with specifications 5-34
Dirty fuel filter
Dirty air filter 5-12
Wrong valve clearance
Injection line leaks
Malfunctioning fuel injector
Engine does not run on all cylinders
Injection line leaks
Malfunctioning fuel injector
Insufficient or no engine oil pressure
Oil level too low 5-6
Machine inclination too high
Wrong SAE grade of engine lubrication oil 5-34