|
Failure |
Cause |
Consequences |
|
Improperly adjusted ignition system |
Spark advance
(from a proper moment) |
Pre - ignitions
Detonation burning
|
| Spark delay
(from a proper moment) |
Excessive
formation of combustion deposits |
|
Improper air/fuel ratio |
Rich mixture |
Excessive
formation of combustion deposits |
| Lean mixture |
Pre - ignitions
Detonation burning |
|
Low or no performance of the air filter |
Dust
penetration into the combustion area |
Excessive
deposits |
| Filter
impassability |
Excessive
formation of combustion deposits |
|
Compression pressure |
Low |
Excessive
formation of combustion deposits |
|
Improperly selected spark plug |
Too hot |
Pre - ignitions
Detonation burning |
| Too cold |
Excessive
formation of combustion deposits |