Black smoke and bad performance

[Bigkoll]

Hi all, drove my C-max 2007 to my sons house last Wednesday night. 

on the way i heard a pop and what seemed like a hiss of air and lack of power engine light came on 

(later found code to be p010f mass or volume airflow sensor)

i have noticed oil around the pipe behind rocker cover top left of engine (sorry for poor description)

any help appreciated, thanks in advance.

p.s. i will try to answer any questions but not very much knowledge with parts.

[Luke4efc]

Sounds like an intake pipe has come off or split which would've messed up the MAF readings.

[Bigkoll]

Hi Luke4efc there was a small thin pipe snapped at the joint so i put it back in although a bit shorter it fit, but still get juddering on revving.

does it need resetting at all.

[TomsFocus]

1.8 TDCI?  That small pipe is part of the MAP sensor so it needs to be on tight.

I suspect you've split one of the larger pipes if you heard it pop though.

[Bigkoll]

thanks for advice will give it a check next weekend with my son (work away all week).