Hard Starting

SYMPTOM DESCRIPTION:

Engine cranks OK, but does not start immediately. Will eventually start and run, but may die shortly after.



SYSTEM OR COMPONENT TO CHECK ACTION

COMPUTER INPUTS/OUTPUTS CHECK: - COOLANT TEMPERATURE SENSOR:
Refer to COMPONENT TEST PROCEDURES.

- THROTTLE POSITION SENSOR (TPS):
Refer to COMPONENT TEST PROCEDURES.
- IDLE SPEED STEPPER MOTOR
Refer to COMPONENT TEST PROCEDURES.
- No crank signal.



FUEL CHECK - FUEL PUMP RELAY
To check the fuel pump relay operation,
refer to Testing and Inspection/Procedures.

- FUEL PRESSURE:
Insufficient pressure

- WATER CONTAMINATED FUEL





IGNITION CHECK: - IGNITION COIL OUTPUT VOLTAGE
Check for spark using appropriate spark tester.
- SPARK PLUGS
Wet/fouled plugs, improper gap, burned electrodes,
cracks, wear, or heavy deposits.

- IGNITION WIRES
Bare, shorted, cracked.

- DISTRIBUTOR CAP
Cracks, Moisture, Carbon Tracks.

- DISTRIBUTOR SHAFT for wear.

- PICKUP COIL for secure connections.



EMISSIONS CHECK: - EGR SYSTEM:
Valve or Solenoid operation.
Refer to Powertrain Management/Emission Control Systems/Testing and Inspection/Procedures.