[Rating]

Ok here is some new methods. Some Might repeat themselves.

Engine Hard to start when hot
1.) Air Filter Clogged
2.) Fuel not reaching the fuel injection system
3.) Corroded battery connections, especially ground.

Engine starts but stops immediately
1.) Loose or faulty electrical connections at distributor, coil, or alternator
2.) Insufficient fuel reaching the fuel injector(s)
3.) Vacuum leak at the gasket between the intake manifold and throttle body.

Engine Rotates but will not start
1.) Fuel tank empty.
2.) Battery discharged
3.) Battery terminal connections loose or corroded.
4.) Leaking fuel injector(s), Faulty fuel pump, pressure regulator, etc.
5.) Fuel not reaching fuel rail.
6.) Ignition components damp or damaged.
7.) Worn, faulty or incorrectly gapped spark plugs.
8.) Broken, loose or disconnected wiring in the starting circuit
9.) Loose distributor is changing ignition timing.
10.) Broken, loose or discounnected wires at the ignition coil or faulty coil.