Fuel Supply Problems:
* Low fuel: The most obvious cause! Check your fuel gauge.
* Fuel pump failure: The pump may be weak, failing to deliver enough fuel pressure, or completely broken.
* Clogged fuel filter: A dirty filter restricts fuel flow.
* Fuel tank issues: Problems like a clogged fuel tank vent (preventing air from entering the tank as fuel is drawn out) or debris in the tank can restrict fuel flow.
* Kinked or damaged fuel lines: A bent or cracked fuel line will disrupt fuel delivery.
* Fuel pump relay failure: The relay is an electrical switch controlling the fuel pump. If it's faulty, the pump won't activate.
Fuel Delivery Problems:
* Clogged fuel injectors: Injectors spray fuel into the engine. If they're clogged, the engine won't get enough fuel.
* Faulty fuel pressure regulator: This component regulates fuel pressure; a malfunction can lead to too little or too much pressure.
* Problems with the fuel rail: The fuel rail distributes fuel to the injectors. Leaks or blockages can cause problems.
Other Potential Causes (less likely but possible):
* Air leaks in the intake system: An air leak can lean out the air-fuel mixture, mimicking fuel starvation.
* Crankshaft position sensor (CKP) issues: If the sensor is faulty, the engine might not be getting the correct signal to inject fuel.
* Mass airflow sensor (MAF) issues: A faulty MAF sensor can provide inaccurate readings to the engine computer, leading to poor fuel delivery.
Troubleshooting Steps:
It's best to start with the simplest and safest checks first:
1. Check the fuel gauge.
2. Listen for the fuel pump: Turn the ignition key to the "on" position (without starting the engine). You should hear a brief humming sound from the fuel pump (usually near the fuel tank). If you don't hear it, there could be a pump or relay problem.
3. Visually inspect fuel lines for damage.
If these initial checks don't reveal the problem, you'll likely need more advanced diagnostic tools or the assistance of a qualified mechanic to check fuel pressure, inspect the injectors, and diagnose more complex electrical issues. Attempting more advanced troubleshooting without the proper knowledge and tools can be dangerous.
