Fixing problems one
Join Date: Jun 2016
County: Bosnia & Herzegovina
147 JTD no boost, loud hissing noise (guessing an air leak)
Happened a few days ago, I noticed power losses but it still had a bit of a kick when you put the foot down. Today, full throttle almost no acceleration (but it could all be in my head). Loud hissing noises around 2500 RPMs. I passed through a tunnel with full throttle and it sounded like a jet taking off. I am guessing it's one of the hoses. Could it be fixed at home, or do I need to take it to the mechanic? I'd rather do it myself if it's something easy, save money and gain experience.
EDIT: The hissing occurs in the left part of the engine. I hear it louder from the driver's seat.