spark_plug_diagnosis
|
FAILURE |
CAUSE |
CONSEQUENCES |
FIG. |
|---|---|---|---|
|
Improperly adjusted ignition system |
Spark advance (from a proper moment) |
Pre - ignitions Detonation burning |
2 |
|
Spark delay (from a proper moment) |
Excessive formation of combustion deposits |
1 |
|
|
Improper air/fuel ratio |
Rich mixture |
Excessive formation of combustion deposits |
1 |
|
Lean mixture |
Pre - ignitions Detonation burning |
2 |
|
|
Low or no performance of the air filter |
Dust penetration into the combustion area |
Excessive deposits |
3 |
|
Filter impassability |
Excessive formation of combustion deposits |
1 |
|
|
Compression pressure |
Low |
Excessive formation of combustion deposits |
1 |
|
Improperly selected spark plug |
Too hot |
Pre - ignitions Detonation burning |
2 |
|
Too cold |
Excessive formation of combustion deposits |
1 |
|
|
None |
|
Perfect performance of the spark plug |
4 |
Spark Plug Diagnosis Pictures Chart (FIG.)
