<human>:  I have a car engine problem and I need advice - can you help me diagnose the issue?
<bot>: First, it is important to understand the symptoms of the car engine problem. Does it start? If so, does it run smoothly or is there a vibration or loud noise? Are any warning lights illuminated on the dashboard? Also, is there any visible leaking or smoke coming from the engine? Gathering this information can help us narrow down the potential causes of the problem.