I had posted the above topic a while ago. I didnt receive any replies suggesting that no one has experienced similar problems before. The problem is still there but there are some interesting facts that I have discovered over the months. The misfiring is more frequent that I cannot drive the car now. Secondly, someone tampered with the diagnostic socket, so we cant put it on a diagnostic machine.
I mentioned that the engine used to cut-off more when I was going right. When we jack the car up on the right side( Looking from outside to the front of the car) the engine works fine, the sounds different and is smooth. But jack it up on the left and the engine starts misfiring. The check engine light comes on and even the slightest pressure on the engine like leaning on it would make the engine to cut out. The battery drained while we were doing these experiments...We are working ( experimenting) everyday and hopefully will hit the fault eventually. Meanwhile any words of wisdom would be much appreciated. Thanks.