If you have an engine problem, rattling, and noise when starting in the morning or when the car is cold, or you stop the car for an hour and then start it, you hear a rattling sound in the engine. A mechanic comes and says to tighten the timing chain or change the oil pump, or something else. The problem is an oil leak in a small part of the engine. Change it and everything will be fine, God willing. If you have a problem and want to inquire, please contact via WhatsApp.