- This is the most common cause of air in the fuel line. A leak in the fuel line allows air to enter the system, which can cause the engine to run rough or even stall.
2. Faulty fuel injector:
- A faulty fuel injector can also cause air to enter the fuel line. When a fuel injector is not working properly, it can allow fuel to leak back into the fuel line, which can cause air to be drawn in.
3. Clogged fuel filter:
- A clogged fuel filter can restrict the flow of fuel to the engine, which can cause air to be drawn into the fuel line.
4. Low fuel level:
- When the fuel level is low, the fuel pump may not be able to draw fuel from the tank, which can cause air to be drawn into the fuel line.
5. Faulty fuel pump:
- A faulty fuel pump can also cause air to enter the fuel line. When a fuel pump is not working properly, it may not be able to generate enough pressure to push fuel through the fuel line, which can cause air to be drawn in.
