Bare with me guys new to this.
Whilst driving my 2006 d5 there was a sudden loud popping air release type noise. Stopped immediately thinking a tyre had blown, which it wasn't. When setting back off it immediately stalled. Tried again slowly, the car won't go past 10mph due to it constantly jerking jumping violently. Car ticks over fine, but when revved it fluctuates up and down. Hard revs produce grey smoke from exhaust and smoke comes from where the swirl actuator link connects to the head.
Any advice will be greatly appreciated.
Regards Craig.