Haris,


Who was the "expert" who taught you to shut your engine down with the choke?
You don't shut your car engine down this way, do you?

You either shut off the fuel, or the ignition.

Of-course it is a mistake and all those telling you not to are right.


It is quite possible this will is what make soot on the spark-plug.

Soot on the plug creates short circuits, which can make your engine run rough...