why does my BMW X5 G05 (2019-2024) engine run rough after fuel fill-up

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, fuel pressure gauge, socket set, torque wrench.
• Ensure the vehicle is parked on a level surface and the engine is cool before starting work.

2. Address Fuel Cap Issues

• Sub-steps:
  1. Remove the fuel cap and inspect for cracks or damage.
  2. Clean the sealing surface on the fuel filler neck.
  3. Replace the fuel cap if it is found to be defective.

3. Repair Fuel Venting System

• Sub-steps:
  1. Locate the fuel tank vent lines and inspect for blockages or kinks.
  2. Remove any obstructions found in the venting system.
  3. Replace any damaged vent lines or components as necessary.

4. Clean or Replace Fuel Injectors

• Sub-steps:
  1. Remove the fuel rail assembly and detach the injectors.
  2. Use a fuel injector cleaning kit to clean the injectors.
  3. Reinstall cleaned injectors, ensuring they are properly seated.
  4. If injectors are damaged, replace them with new ones.

5. Check for Vacuum Leaks

• Sub-steps:
  1. Inspect all intake hoses and gaskets for signs of wear or damage.
  2. Use a smoke machine to identify any vacuum leaks in the intake system.
  3. Replace any faulty hoses or gaskets as necessary.