TROUBLE DIAGNOSES — Diagnostic Table (Cont'd) — Symptom & Condition 18: Engine stall — during start-up
EF & EC-56flowchartDiagnostic Table (Cont'd)
SYMPTOM & CONDITION 18 — Engine stall — during start-up
Possible Causes vs. Check Steps
| Category | Possible Causes | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|---|
| SPECIFICATIONS | Mixture ratio (too rich/too lean) | O | O | O | |||||
| SPECIFICATIONS | Ignition sparks (weak) | O | |||||||
| SPECIFICATIONS | Ignition timing | O | |||||||
| SPECIFICATIONS | Compression pressure (too low) | O | |||||||
| FUEL SYSTEM | Canister (too much evaporation to intake) | O | |||||||
| IGNITION SYSTEM | Spark plugs (wet with fuel, improper gap) | O | |||||||
| INTAKE SYSTEM | Throttle valve (not open enough) | O | |||||||
| CONTROL SYSTEM | Exhaust gas sensor | O |
SPECIFICATIONS
Possible CausesMixture ratio (too rich/too lean)
1
2
3
4
5
6O
7O
8O
SPECIFICATIONS
Possible CausesIgnition sparks (weak)
1
2
3O
4
5
6
7
8
SPECIFICATIONS
Possible CausesIgnition timing
1O
2
3
4
5
6
7
8
SPECIFICATIONS
Possible CausesCompression pressure (too low)
1
2
3
4
5O
6
7
8
FUEL SYSTEM
Possible CausesCanister (too much evaporation to intake)
1
2
3
4
5
6O
7
8
IGNITION SYSTEM
Possible CausesSpark plugs (wet with fuel, improper gap)
1
2
3
4O
5
6
7
8
INTAKE SYSTEM
Possible CausesThrottle valve (not open enough)
1
2O
3
4
5
6
7
8
CONTROL SYSTEM
Possible CausesExhaust gas sensor
1
2
3
4
5
6
7
8O
SERVICE PROCEDURE
Service Procedure — Engine stall during start-up
Rendering diagram…