* Fuel pump: Running out of gas can sometimes damage the fuel pump. The pump relies on the fuel to lubricate it. Running it dry can cause it to seize or overheat. This is the most likely culprit.
* Immobilizer/Security System: It's less likely, but some security systems will disable the engine if the car's battery voltage drops too low (which can happen if you try repeatedly cranking a car with no fuel). It would be a strange coincidence that this happened *exactly* when you ran out of gas, though.
* Something else electrical: The "shoot" between the headlights is concerning. This could indicate a short circuit or a more serious electrical problem, possibly related to the attempt to crank the car with an empty tank. The low voltage could have damaged something.
* Alternator: While less likely if the car was cranking, a bad or failing alternator could contribute to the problem, especially if the battery was already weak.
The "shoot" between the headlights is the most worrisome part. It suggests a significant electrical issue that may be unrelated to the lack of fuel. It could be anything from a loose wire to something more serious. Do not attempt to diagnose or fix this yourself if you're not experienced with automotive electrical systems. You risk further damage or even injury.
What you should do:
1. Don't try to start the car again. You could cause more damage.
2. Have a qualified mechanic inspect the car. Explain the entire sequence of events – running out of gas, the "shoot" between the headlights, and the fact that it won't start. They can properly diagnose the problem and recommend repairs. The "shoot" indicates a potentially serious electrical problem that needs professional attention.
3. Consider the fuel pump as a strong possibility. But the mechanic needs to check everything.
4. Do not attempt to charge the battery. If there's a short circuit, charging the battery could be dangerous.
In short, get it to a mechanic. The "shoot" between the headlights implies a more serious electrical problem than simply running out of gas.
