Can you get a picture? I can't think of any hole that should be in the
turbo housing, where exactly is it?
As I said earlier, the guage is supposed to sit around 10 o'clock when
the car is not running. Black is vacuum, yellow is boost, the place
where they meet is atmospheric pressure, if the guage is not pointed
there when the engine is off then it's broken.
Did something wear on it and make a hole? Or is it on the exhaust side?
Perhaps the car ran lean and overheated the exhaust housing, melting a
hole in it.
