I feel a slight voble/ stalling / jerk from the engine while the car is in the starting mode with the netural gear,whereas the moment the car moves on there is no sign like that.

I wanted to clean the trottle body of my car. Anyone who could guide me as how to get started with this car, as i am the new on this car. I had been driving different BMW's in my life.

Secondly have not checked that the spark plugs needs to be changed or not. Have purchased the new one but little hesitant to open up this new machine. Have changed the spark plugs on my previous BMW 530i V-8 with no problem. Anyone who could give some website showing pics as how to change the spark plugs.

Pl give some ideas as to why the engine vobles/ take a jerk in the netural gear

Thanking all of you in advance