why does my Volkswagen Golf MK7 (2015-2019) lose power when accelerating?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery to ensure safety.
• Allow the engine to cool before starting work.

2. Inspect and Replace Air Filter

• Locate the air filter housing.
• Remove the air filter cover by unscrewing any screws or releasing clips.
• Take out the old air filter and inspect it for dirt or blockage.
• Replace with a new, clean air filter.
• Reattach the air filter housing cover.

3. Fuel System Check

• Connect a fuel pressure gauge to the fuel rail's test port.
• Start the engine and monitor pressure readings; it should meet manufacturer specifications (typically around 50-60 PSI).
• If pressure is low, inspect the fuel pump and filter for faults.

4. Inspect Ignition System

• Remove the ignition coil covers, if applicable, to access the coils and spark plugs.
• Inspect spark plugs for wear; replace if they show signs of damage or excessive wear (gaps should be checked and adjusted to specifications).
• Replace any faulty ignition coils identified during inspection.

5. Clean Throttle Body

• Disconnect the throttle body electrical connector.
• Remove the throttle body from the intake manifold by unscrewing the mounting bolts.
• Clean the throttle body with throttle body cleaner using a soft cloth or brush, paying attention to the throttle plate and edges.
• Reinstall the throttle body and reconnect the electrical connector.

6. Test and Replace MAF Sensor (if needed)

• Disconnect the MAF sensor electrical connector and remove it from the intake duct.
• Inspect for dirt or damage; clean with MAF cleaner if needed.
• If issues persist, replace the MAF sensor with a new one.