Cars Q&A

i m having a 2004 indica dls car at shillong, the problem is that when ever i cold start the engine say after 8 to 10 hours the engine starts but vibrates and stopped so again i use to start and idle the engine then it becomes ok. May i know actually what the problem it is? My local mechanic say that since the car is old this is a common problem. Another mechanic told that it is because of the heater plug. Can u help me in solving this problem