my BMW 5 Series F10/F11 (2010-2017) won't accelerate smoothly what's the issue

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Clean Throttle Body

• Remove the throttle body from the intake manifold.
• Use a throttle body cleaner and a soft cloth to clean the inside of the throttle body.
• Reinstall the throttle body, ensuring all connections are secure.

3. Replace Air Filter

• Locate the air filter housing.
• Open the housing and remove the old air filter.
• Install a new air filter ensuring it fits snugly.

4. Test and Replace Fuel Pump (if necessary)

• Connect a fuel pressure gauge to the fuel rail.
• Turn on the ignition without starting the engine to check fuel pressure.
• If pressure is below specifications, replace the fuel pump.
• To replace, depressurize the fuel system, disconnect the battery, remove the fuel pump assembly from the tank, and install a new pump.

5. Inspect and Replace Ignition Components

• Remove the ignition coils and inspect spark plugs for wear, carbon buildup, or damage.
• Replace any faulty spark plugs and ignition coils.
• Reinstall the ignition components and reconnect the battery.

6. Clean or Replace Mass Airflow Sensor

• Remove the MAF sensor from the intake duct.
• Clean the sensor with MAF cleaner, avoiding touching the sensing elements.
• Reinstall the MAF sensor. If cleaning does not solve the issue, replace the sensor.