I had this issue recently, when I put my foot to the floor there was no bite, and a large fizzing sound. (i now know that this is air)
The air was escaping from the two rubber air intakes at the front of the engine which were split at the back.
Ford wanted £50 EACH! and they were Ford only parts. I got some radiator hose the same diameter (59mm?) which was about £9 from a local Hydraulics place, cut to size with a stanley, clamped on with jubilees and bobs your uncle.
NB shortly after the 90 degree bend further on in the line also split, so replaced that with a 90 degree silicone bend on ebay, which was about £12.
Unfortunately this has absolutely nothing to do with the OPs problem, you did not have the same issue as the OP (original poster)
You have a turbo car, the OPs is NA (naturally asperated/ non-turbo)
An NA engine will draw air into leaks, not blow it out like a turbo engine would
Apart from the fact that yours is a completely different engine, and is a diesel, not a petrol like the OPs