Fault Tracing
A number of symptoms and possible causes of engine malfunctions are described in the table below. Always
contact your Volvo Penta dealer if problems occur which you can not solve by yourself.
NOTICE! Read through the safety advice for care and maintenance work in the Safety Information page 6 chapter
before starting work.
Symptoms and possible causes
Pop-ups are shown in the tachometer display See chapter Fault Code Register page 44
Engine can not be stopped 2, 4, 5, 7, 8
Starter motor does not rotate 1, 2, 3, 4, 5, 6, 8, 9, 10, 36, 39
Starter motor rotates slowly 1, 2
Starter motor rotates normally but engine does not start 1, 11, 12, 13, 14, 38, 39
Engine starts but stops again 1, 11, 12, 13, 14, 19, 37, 39
Engine does not reach full operating speed at full throttle 12, 13, 14, 15, 16, 17, 18, 19, 20, 23, 34, 37, 39, 40
Engine runs unevenly 14, 15, 40
Engine vibrates 24
High fuel consumption 15, 16, 18, 21, 37
Black exhaust smoke 19
Blue or white exhaust smoke 21, 35
Lubrication oil pressure too low 22
Coolant temperature too high 25, 26, 27, 28, 29, 30, 31, 32, 33
Coolant temperature too low 32
No charge or poor charge 2, 27
1. Flat batteries
2. Poor contact/open circuit in cables
3. Main switch turned off
4. One of the circuit breakers in the distribution box has tripped
5. Faulty key switch
6. Control lever not in neutral/control position not activated
7. Faulty stop relay
8. Faulty main relay
9. Faulty starter relay
10. Faulty starter motor/solenoid
11. Lack of fuel:
- fuel taps closed
- fuel tank empty
- wrong tank connected
12. Blocked fine fuel filter/pre-filter
(caused by contamination or fuel stratification at low temperature)
13. Air in the fuel system
14. Water/contamination in fuel
15. Boat abnormally loaded
16. Fouling on hull/propeller
17. Cablage to unit injector damaged
18. Faulty unit injectors
Fault Handling
42 7748887 04-2008
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