Perkins M92B - Fault Diagnosis; Engine Problems and Possible Causes

N37347 Chapter 6
Page 45
Fault diagnosis
Problems and possible causes
Engine problem
Possible causes
Checks by the user
Checks by the
workshop personnel
The starter motor turns the engine too slowly 1, 2, 3, 4
The engine does not start
5, 6, 7, 8, 9, 10, 12, 13,
14, 15, 17
34, 35, 36, 37, 38, 42,
43, 44
The engine is difcult to start
5, 7, 8, 9, 10, 11, 12,
13, 14, 15, 16, 17, 19
34, 36, 37, 38, 40, 42,
43
Not enough power
8, 9, 10, 11, 12, 13, 16,
18, 19, 20, 21
34, 36, 37, 38, 39, 40,
41, 43, 63
Misre
8, 9, 10, 12, 13, 15, 20,
22
34, 36, 37, 38, 39, 40,
41, 43
High fuel consumption
11, 13, 15, 17, 18, 19,
23, 22
34, 36, 37, 38, 39, 40,
42, 43, 44, 63
Black exhaust smoke
11, 13, 15, 17, 19, 21,
22
34, 36, 37, 38, 39, 40,
42, 43, 44, 63
Blue or white exhaust smoke 4, 15, 21, 23
36, 37, 38, 39, 42, 44,
45, 52, 58, 61, 62
The pressure of the lubricating oil system is too low 4, 24, 25, 26 46, 47, 48, 50, 51, 59,
The engine knocks
9, 13, 15, 17, 20, 22,
23
36, 37, 40, 42, 44, 46,
52, 53, 60
The engine runs erratically
8, 9, 10, 11, 12, 13, 15,
16, 18, 20, 22, 23
36, 38, 40, 41, 44, 52,
60,
Vibration 13, 18, 20, 27, 28
36, 38, 39, 40, 41, 44,
52, 54
The pressure of the lubricating oil system is too high 4, 25 49
The engine oil temperature is too high
11, 13, 15, 19, 27, 29,
30, 32, 65, 66, 67, 68
34, 36, 37, 39, 52, 55,
56, 57, 69
Crankcase pressure 31, 33 39, 42, 44, 45, 52, 61
Bad compression 11, 22
37, 39, 40, 42, 43, 44,
45, 53, 60
The engine starts and stops 10, 11, 12
Reverse gearbox problem
Possible causes
Checks by the user
Checks by the
workshop personnel
Delay of gear engagement
(1)
70, 71
No transmission 72 75
The boat does not reach maximum speed
(2)
73, 74 75, 76, 77
(1) Propeller rotates only after a delay of several seconds or only after engine speed is increased.
(2) Temperature of the reverse gearbox is high.