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
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…
Legend:ActionDecisionTerminal
See also
EF & EC-86Diagnostic Procedure 4 — ENGINE TEMPERATURE SENSOR (Code No. 13)EF & EC-84TROUBLE DIAGNOSES — Diagnostic Procedure 3 — AIR FLOW METER (Code No. 12)EF & EC-104Diagnostic Procedure 11 — START SIGNAL (Switch ON/OFF diagnosis)EF & EC-114Diagnostic Procedure 16 — PRESSURE REGULATOR (P.R.) CONTROL SOLENOID VALVE (Not self-diagnostic item)