Dear Experts,
I have bought used Mira 2015 model, when I start car in morning, a hammer like loud sound (tik tik) appears for 4-5 minutes or unitl I put the gear in drive mode and start moving after the sound disappears and no sound when I start again. The oil level is fine, the old owner using 10W30 engine oil. The oil light in the dashboard turned off just after the start. The mechanic is saying that the oil pump is weak or there is an oil filter in the chamber that is choked. Expert advice is needed. You can also suggest expert mechanic located in Karachi. You can hear the sound in this video video