it could be your firing order. or the plugs are not on all the way.
or just need a knew coil pack, plug wires, or new spark plugs
TCC Solenoid.
A bendix.
could be the starter or the solenoid, they arer pron to heating up especially when using headers, peace
Usually when hot? Could be a starter going bad
Stuck relay or the starter is wired incorrectly.
Would be in the distributer or the ignition module
No, The compression test is done as the starter cranks the engine
you have a bad solineiod in your starter go get a new starter
If the check engine light is or has illuminated, check for codes.
When you turn the key in your car, the key turns the starter motor, which inturn cranks the flywheel of your motor. Once firing is accomplished the starter is released, as you release the key. If your motor, just cranks and not start, you may have jumped your timing and this will have to be restored by a mechanic, as the timing belt needs changing.
Have you checked the air filter? Fresh Gas? Battery amps?Does the starter spin and not engage? If so it is your starter solenoid.
If your 1999 Ford Mustang cranks but won't turnover you may have a problem with the starter, the solenoid, or the alternator.