Trouble Diagnoses — Diagnostic Table (Cont'd) — Symptom 6: Hard to start — after warm-up
EF & EC-44flowchartDiagnostic Table (Cont'd)
SYMPTOM & CONDITION 6 — Hard to start — after warm-up
Possible Causes — Hard to start after warm-up
| System | Possible Causes | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|---|
| SPECIFICATIONS | Mixture ratio | O | O | ||||||
| SPECIFICATIONS | Fuel pressure | O | O | O | |||||
| FUEL SYSTEM | Fuel line (hot fuel) | O | |||||||
| FUEL SYSTEM | Pressure regulator (low fuel pressure) | O | |||||||
| FUEL SYSTEM | Pressure regulator vacuum hose (clogged) | O | |||||||
| FUEL SYSTEM | Pressure regulator control solenoid | O | O | ||||||
| FUEL SYSTEM | Pressure regulator control solenoid vacuum hose | O | |||||||
| IGNITION SYSTEM | Ignition switch (no start signal) | O | O | ||||||
| CONTROL SYSTEM | Engine temperature sensor | O | |||||||
| CONTROL SYSTEM | Air flow meter | O | |||||||
| OTHERS | Starter (operation too slow) | O | |||||||
| OTHERS | Battery (voltage too low) | O | O |
SPECIFICATIONS
Possible CausesMixture ratio
1
2
3O
4
5O
6
7
8
SPECIFICATIONS
Possible CausesFuel pressure
1
2
3O
4
5O
6O
7
8
FUEL SYSTEM
Possible CausesFuel line (hot fuel)
1
2
3O
4
5
6
7
8
FUEL SYSTEM
Possible CausesPressure regulator (low fuel pressure)
1
2
3
4
5O
6
7
8
FUEL SYSTEM
Possible CausesPressure regulator vacuum hose (clogged)
1
2
3
4
5O
6
7
8
FUEL SYSTEM
Possible CausesPressure regulator control solenoid
1
2
3
4
5
6O
7O
8
FUEL SYSTEM
Possible CausesPressure regulator control solenoid vacuum hose
1
2
3
4
5
6O
7
8
IGNITION SYSTEM
Possible CausesIgnition switch (no start signal)
1O
2
3
4O
5
6
7
8
CONTROL SYSTEM
Possible CausesEngine temperature sensor
1
2
3O
4
5
6
7
8
CONTROL SYSTEM
Possible CausesAir flow meter
1
2
3O
4
5
6
7
8
OTHERS
Possible CausesStarter (operation too slow)
1O
2
3
4
5
6
7
8
OTHERS
Possible CausesBattery (voltage too low)
1O
2O
3
4
5
6
7
8
SERVICE PROCEDURE
Service Procedure — Hard to start after warm-up
Rendering diagram…