hissing when i put my foot down

[sjp_67@yahoo.com]

hi i have a hissing noise coming from front end of car 

i dont think it is the turbo as i still have power 

im hoping its not my dpf

any ideas

[MrZardoz]

First thing I’d look at is the hoses and air filter housing to see if the hissing is from air escaping from a loose connection. 

[syncview]

Yep, check specially the turbo to intake pipe / system, in a turbodiesel most of the times a hissing sound is produced, there is a small boost leakage.

[sjp_67@yahoo.com]

cheers i'll start checking