Potential causes:
1. Fuel Pressure Regulator: Issues with the fuel pressure regulator can lead to excessive fuel pressure, causing the injectors to overflow. Check the pressure regulator and ensure it operates correctly.
2. Clogged Injectors: Dirty or clogged injectors can cause overflows. Remove and inspect the injectors for any blockages or debris. Clean or replace them as needed.
3. Faulty O-Rings: Worn or damaged O-rings on the injectors can cause fuel to leak, resulting in overflows. Replace any faulty O-rings.
4. Incorrect Fuel Pressure: Ensure the fuel pressure is within the manufacturer's specified range. If it's too high, it can cause injectors to overflow. Adjust the fuel pressure as necessary.
5. Computer or Sensor Issues: Electronic issues, such as malfunctioning sensors or problems with the engine computer, can cause injectors to overflow. Have the vehicle diagnosed by a qualified mechanic to identify any electronic problems.
6. Leaks in Fuel Lines: Check for any leaks in the fuel lines that may be causing the injectors to overflow.
Resolution: Start by checking and correcting the fuel pressure regulator, inspecting and cleaning or replacing the injectors, replacing any damaged O-rings, and verifying the fuel pressure. If the issue persists, have the vehicle diagnosed professionally to identify and resolve any electronic problems or leaks.