Hi everyone, I have been driving a dicor for the last 8 years. The sound of my 2008 2.2 vtt has turned rough since a few months. When I give power on the 3rd or the 4th gears for overtaking in the highway or on an elevation, it puffs out more smoke than I have ever seen earlier. The queer sound like a muffled bhn..bhn..bhnn..bhnn..comes out in idle. The temp gauge rises fast on elevations, slow off-roading and in city traffic in the 2nd and the 3rd gears. Please help.