If you're having fuel-related problems, like the car not starting or running poorly, the issue isn't likely to be solved by a switch. You'll need to diagnose the problem. Possible causes could include:
* Empty fuel tank: Check your fuel gauge.
* Faulty fuel pump: This is a common problem and requires professional diagnosis and repair.
* Clogged fuel filter: This can restrict fuel flow.
* Bad fuel injectors: These inject fuel into the engine.
* Problems with the ignition system: A spark issue can prevent fuel from burning properly.
* Computer issues: The engine control module (ECM) could have problems.
To troubleshoot, it's best to start with the basics (fuel level) and then take it to a qualified mechanic for diagnosis and repair if needed. Trying to fix complex fuel system problems without the proper knowledge and tools can be dangerous.