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Troubleshooting
A number of symptoms and possible causes for engine disturbances are described in the table below. If faults or
hitches arise that you cannot solve alone, you must always get in touch with your Volvo Penta dealer.
WARNING! Read the safety directions for maintenance and service in the chapter "Safety information" before
starting work.
Symptom and possible cause
The diagnostic button indicator flashes
Engine can not be stopped
Starter motor does not rotate
Starter motor rotates slowly
Engine does not start
Engine starts but stops again
Engine is difficult to start
Engine does not reach correct operating speed at full throttle
Engine knocks
Engine runs unevenly
Engine vibrates
High fuel consumption
Black exhaust smoke
Blue or white exhaust smoke
Oil pressure too low
Coolant temperature too high
No charge, or poor charge
1. Flat batteries
2. Poor contact/broken electrical ca-
ble
3. Main switch turned off
4. Control lever not in neutral/control
position not activated
5. A fuse/circuit breaker has tripped
6. Lack of fuel
7. Blocked fuel filter/supply pump
8. Air in fuel system
9. Water/contamination in fuel
* See the "Diagnostic function" chapter for additional information.
64
10. Boat abnormally loaded
11. Fouled hull/propeller
12. Engine speed control wrongly
adjusted
13. Insufficient air supply
14. Too high coolant temperature
15. Too low coolant temperature
16. Too low lubrication oil level
17. Blocked oil filter
18. Defective/wrong propeller
19. Faulty engine mounting
See the "Diagnostic function" chapter
1, 2, 3, 5
1, 2, 3, 4, 5, 28
1, 2
6, 7, 8, 9, 28
7, 8, 9, 13, 28
7, 8, 9, 13
7, 8, 9, 10, 11, 12, 13, 18, 28
14
7, 8, 9, 13, 14
18, 19
10, 11, 13, 15
13, 15, 18
14, 15, 26
16, 17
20, 21, 22, 23, 24, 25, 26
2, 27
20. Not enough coolant
21. Air in fresh water system
22. Blocked sea water inlet/pipe/filter
23. Circulation pump drive belt slips
24. Defective impeller
25. Defective /wrong thermostat
26. Too high lubrication oil level
27. Alternator drive belt slips
28. Stored diagnostic trouble codes
(DTCs)*
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