To all sifu, plssss need help !! my e46 engine started shaking this morning (well, actually dah 1 week dah )so planned to go send to segambut...but when i wanted to start car, it will jerk n then slowly die. i'm sure not battery or starter cos car will start fine plus indicator all is okbut this morning the car feel underpowered so maybe its the sparkplugs or the coils ? or could it be the idling valve ?