hi everyone i have a 2005 156jtd ti 150 and its been making a high pitched turbo like sound for a couple of days i have just found out it has a leaky injecter could this be making the whistleing noise any help would be great
Leaky injectors replaced, but they were only a small part of the whistling sound
then, not to worry you a rather expensive new turbo a few weeks later
Best to get it checked out. My turbo didn't show any of the usual signs, black smoke, poor performance (well, not really noticeably) but a whine that got worse until I could take it no more.
Turbo was sent for a rebuild, but deemed to be uneconomical to repair.
Brand new unit was £30 more expensive than an official Alfa recon, so went with a new unit in the end.