BA 50Z3/6003 en – Edition 4.3 * 5003b410.fm 4-1
Troubleshooting
4 Troubleshooting
The information given in this chapter is provided for maintenance personnel, for fast and
reliable detection of malfunctions and their appropriate repair.
Repairs must only be performed by authorized personnel.
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 5-54
Fuel grade does not comply with specifications 5-54
Malfunctioning or flat battery 5-38
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 or faultless
Fuel grade does not comply with specifications 5-54
Dirty fuel filter
Wrong valve clearance
Injection line leaks
Malfunctioning fuel injector
Engine overheats. Temperature warning system
responds
Oil pressure too low/too high 5-7
Dirty air filter 5-12
Dirty radiator fins 5-9
Coolant level too low 5-10
Malfunctioning fan, torn or loose V-belt 5-25
Resistance in cooling system too high, flow capacity too low
Malfunctioning fuel injector
Insufficient engine output
Oil level too high 5-7
Fuel grade does not comply with specifications 5-54
Dirty air filter 5-12
Malfunctioning air filter maintenance switch or gauge 3-11
Wrong valve clearance
Injection line leaks
Malfunctioning fuel injector
Engine does not run on all cylinders
Injection line leaks
Malfunctioning fuel injector
Malfunctioning fuel injection pump
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