Difficult Or No Start (Cranks Okay)

Check for dirty or clogged fuel filter.
Check fuel pressure and volume.
Check for vacuum leaks.
Check for poor compression.
Check for contaminated fuel.
Check for blown ignition coil fuse.
Check for cracked distributor cap or rotor.
Check ignition and valve timing.
Check spark plugs.
Check EGR system (if equipped).
Check pick-up coil air gap (if equipped).
Check for faulty ignitor (if equipped).
Check for faulty pick-up coil (if equipped).
Check for faulty coolant (water) temperature sensor.
Check for faulty air temperature sensor (if equipped).
Check for faulty noise suppressor (if equipped).
Check for faulty air valve (if equipped).
Check for faulty ignition coil.
Check for faulty throttle opener (if equipped).
Check for faulty power unit (if equipped).
Check for faulty crank angle sensor (if equipped).
Check for lack of fuel in tank.
Check for malfunctioning ECM.
Check for malfunctioning PCV valve.
Check for malfunctioning electronic fuel injection system.
Check for slipped or broken timing belt.
Ensure sufficient secondary spark is available.