@Rizkhan, bro yesterday visited AC mechanic for AC problem, if you remember a dog accident when car's bumper was damaged, that time the condenser of AC was minor leaked but AC worked for some weeks, the culprit was that leakage due to which AC stop working, AC mechanic recharged the gas, service the condenser and weld it, service the evaporator, and changed the drier. AC is now okay. and for the blue smoke problem at inclined area, the problem is now worst and blue smoke is there at signals stop, and partially on road but not continuous, I am busy in house construction, thats why engine work is pending.