[amiejane]

Injector leak off pipes is common for cabin smoke, take cover off and look for leaking diesel which fills up injector socket and heats up under engine temp thus getting sucked into the cabin, the DIY mechanic can do this job in 10 mins at the cost of a 5er for a leak of replacement kit on the bay if it is indeed this.

 

[amiejane]

There not mechanics they are component fitters their fault finding skills are very poor, but I do try to keep in with the technician where I am, but your right they haven't worked on the drive in the snow or in a leaking work shop made from OSB board like my first one with minimal tools but that's how you learn, in regards to leak of diesel issue its a slow process up untill the cabin fills I had a 407 where for months I could smell burnt diesel but with no real obvious signs then one day after a long journey I pulled up and though I'm on fire but no real signs of diesel then few weeks later the cabin started to fill which is when I noticed the sockets full and put 2 and 2-together sorted leak offs and sorted it straight away so needs sorting because in hailing that is not nice my ole women thought I was on something when I walked through the door ☺☺☺

 

[amiejane]

Yours is different you can see
Smoke bellowing which indicates exhaust gas, could be most likely coming from the EGR valve Video is very dark and couldn’t see your engine to well but I would inspect the EGR thoroughly.