Non Starting

Loose battery terminals
Discharged or faulty battery
Immobilser not disengaged
Gear selector not in N or P
Broken wiring in starter circuit - battery, starter solenoid and ignition switch
Starter motor pinion jammed in flywheel ring gear
Faulty starter solenoid
Faulty starter motor
Engine seized
No fuel
Battery discharged
Loose battery connections
Choked fuel filter
Blocked fuel tank vent lines
Choke not working
Faulty distributor cap or rotor or loose ditributor
Low cylinder compression
Valve clearances wrong
Water in fuel
Faulty ignition coil
Blocked carburrettor jets or injectors
Wet or damaged ignition components
Faulty spark plugs
Broken wires instarting circuit
Timing chain or belt failed
Diesel cut-off solenoid faulty
Diesel pump faulty
Diesel pump timing wrong
Sticking starter motor pinion
Pinion or flywheel ring gear broken or worn