1. Idle with black smoke.
2. Engine jerk when idling.
3. spark plug goes black and after replacement its ok for a while but later will be like running on 3 cyl.
4. Changed plug ...
i haven't start my car for 1 week. so when i start, i drive until turbo start to boost the engine make noise like glok3x and the CEL is on, ... then i park back my car and drive another car.