I'm guessing that you mean it turns over but wont start. Anyway, two essential things that a car needs to run is fire and fuel. Check to make sure there is spark to the cylinders and also make sure there is fueling being supplied to the injectors or carburetor. You can check the fuel by pressing the "valve stem" that located in the return line from the injectors. It should have a little pressure to it.
How to find the reason for not starting when turning the key over on a 1993 Ford escort lx
Could be your alternator problem.
BACK TO BASIS DOES IT TURN OVER IF SO CHECK FOR GAS /SPARK........EVEN CHECK THE EGNITION KEY CHIP.....STARTER NOT TURNING OVER FULLY.....
Starting Over - 2003 Reason Why 2-77 was released on: USA: 14 January 2005
the fuel pump or crank sensor
If you mean "turning over", there could be a thousand reasons but I would check the battery and connections first. Also, there may be a safety switch on the clutch or shifter. Some are even actuated by having to have the brake pedal depressed when starting.
not turning on could be flat battery, bad igniton switch, bad safety switch, bad starter motor,bad stater solenoid
No fuel (out, or pump not pumping) or no spark (or really bad timing).
this is a very general question, you need to narrow it down some, such as its turning over but not starting. are your lights coming on, do you have the key, are you turning the key, does it have fluids, etc....
Dead battery.
Mazda Millenia 95 not starting put another motor in it just turning over? its probably the distributor is bad.
The electric fuel pump could be broke. The fuel filter could be clogged. Or you could have clogged injectors. This could be the problem if it is turning over but wont start. If it won't turn all the way over then try to clean the battery post, jump start it or just tighten the battery connectors.