Why does my car turn over but only runs for a second?

If your car turns over but only runs for a second, it could indicate an issue with the fuel supply, such as a clogged fuel filter or a failing fuel pump. Another possibility is a problem with the ignition system, such as faulty spark plugs or ignition coils. Additionally, a malfunctioning sensor, like the crankshaft or camshaft position sensor, could also cause this issue. It's best to have a mechanic diagnose the problem for accurate troubleshooting.