how to fix a rough running engine in a BMW X3 G01 (2018-2024)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal for safety.

2. Replace Spark Plugs

• Remove the engine cover if applicable.
• Use a socket set to remove the ignition coils.
• Extract the spark plugs using a spark plug socket.
• Inspect and replace with OEM or equivalent spark plugs, ensuring proper torque (typically 20 Nm).
• Reinstall the ignition coils and engine cover.

3. Check and Replace Fuel Filter (if applicable)

• Locate the fuel filter (refer to vehicle manual for location).
• Relieve fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.
• Disconnect the fuel lines from the filter using a fuel line removal tool.
• Replace the old filter with a new one, ensuring correct orientation.
• Reconnect fuel lines and reinstall the fuel pump relay.

4. Inspect and Replace Air Filter

• Locate the air filter housing and unclip or unscrew it.
• Remove the old air filter and inspect for dirt or damage.
• Install a new air filter, ensuring a snug fit.
• Reattach the air filter housing securely.

5. Test MAF Sensor

• Locate the MAF sensor in the intake duct.
• Disconnect the electrical connector and remove the sensor from the duct.
• Clean the MAF sensor using MAF cleaner spray.
• Reinstall the sensor and reconnect the electrical connector.