Here's what's likely happening and what you should do:
* Fuel pump: The most likely culprit. The pump might be failing to supply fuel, or there might be a blockage. You need to check the fuel pressure. A mechanic can do this easily.
* Fuel filter: A clogged fuel filter restricts fuel flow. This is a relatively cheap and easy part to replace.
* Crankshaft Position Sensor (CKP) or other sensors: These sensors tell the engine's computer when to fire the spark plugs. A faulty sensor can prevent the engine from starting, even if there's fuel.
* Fuel injectors: These might be clogged or failing.
* Ignition system: While you say it cranks, there might still be an ignition problem (spark plugs, ignition coil, etc.).
What to do:
1. Do NOT use starting fluid again. It's damaging your car.
2. Have a mechanic diagnose the problem. They have the tools (fuel pressure gauge, diagnostic scanner) to quickly identify the source of the issue. Describing the symptoms (cranks but doesn't start after running with starting fluid) will be crucial.
3. Consider checking basic things yourself (if comfortable): Check your fuel filter; it's a relatively simple DIY task for many cars. But for more involved diagnostics or repairs, leave it to the professionals to avoid further damage.
Ignoring the problem and continuing to use starting fluid will likely lead to expensive engine repairs down the line. Getting it professionally diagnosed is the best and safest course of action.
