Hard to Start

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.