What likely happened:
* Blown Head Gasket: The head gasket seals the combustion chamber from the cooling system. When it blows, it can cause a few things:
* Loss of Coolant: The coolant leaks into the combustion chamber, potentially causing the engine to overheat.
* Air in the Cooling System: Air from the combustion chamber can enter the cooling system, making it harder to maintain pressure and potentially causing overheating.
* Engine Misfire: The air-fuel mixture in the combustion chamber is compromised, leading to a misfire and eventually a stall.
Why the engine turns over but won't start:
* Lack of Compression: The blown head gasket allows air to escape from the cylinders, preventing proper compression and ignition.
What to do:
1. Safety First:
* Don't try to restart the engine. This could cause further damage.
* Check the coolant level. If it's low, you likely have a leak.
* Look for signs of overheating. If the engine is hot, let it cool down completely before inspecting.
2. Inspect for External Damage:
* Check for coolant leaks around the engine and under the car.
* Look for any obvious damage to hoses or belts.
3. Get it Diagnosed:
* Call a tow truck. It's best to have a mechanic diagnose and repair the issue, as a blown head gasket is a serious repair.
* Explain the symptoms to the mechanic so they can start troubleshooting effectively.
Important Notes:
* Don't ignore the problem. Driving with a blown head gasket can cause severe engine damage.
* Early detection is key. If you hear a popping sound or notice any of the symptoms described above, pull over and get it checked out immediately.
Let me know if you have any other questions!