UK Auto Repair Questions?
Hello! My name is Gary.Welcome to JustAnswer.I'm reviewing your question now, and will post back with a reply shortly.
You need to check for a leak between the turbo and the engine. Intercooler core, tanks, hoses , intake manifold etc.
Do you need any further help?
I hope my advice has been of assistance to you.
Merry Christmas to you and your family.
Have you got another one, and about to change it?
Have you proved there is no leaks as I mentioned above?