There is a minor leak of coolant from the upper pipe (attached to the engine end), the leak is not from the pipe rather it is from the circular shape thingy (don't know what is this, might be a thermostat).
But i remember it was once broken by a mechanic when he was installing thermostat back. and he has done some JUGARR type of work, I asked him whether I should take a new that THING or not, but he told me that it will be okay for a while. now that Mechanic is not available, I have to check with some other mechanic, but first I want to get help what was that THING? (Just a cover?)