Timing chain problem
Hello. This can be caused by a variety of things, timing chain (https://www.yourmechanic.com/services/timing-chain-replacement) being one of them. However, there are many other reasons this may also happen, such as a faulty mass air flow sensor (https://www.yourmechanic.com/services/mass-airflow-sensor-replacement), fuel injection problems (https://www.yourmechanic.com/services/fuel-injector-replacement),...