[newbie]

hello folks

 

Newbie in weymouth, newbie can really only mean one thing so here comes the plea for help!!!!

I have an FL1 td4 2006. 

It recently popped an injector out because it suffered a broken collar, why are the bloody little mounting bolts so soding expensive?????

sooooo.

I have reseated the injector and put the bloody thing back together again, broke the rocker cover getting it out so have changed that, having got it all back together I now find the car is laying down smoke like an apc
this is black exhaust smoke so I assume a bad air/ fuel mix, there are no splits I can see in the intercooler hoses, I have ordered some new anyway just in case.

my Chinese code reader says p1020 a low signal on mass air device so a new maf is coming. 

Is there anything stupid that I may have missed or done?

Help !!