Over boosting diagnosed....help needed

[SurfnSun]

Well I went out and rented a vac gauge tonight. I pulled off the two lines the run off the plenum, the one closest to the firewall would not hold any vac at all. I could pump it up to 10 or 15 psi and it would bleed off in a matter of seconds. The front one would hold vac with a very very very slow bleed off...should that one be of a concern as well?

Now back to the one I know is bad, Im pretty sure its the one that runs to the driver's side turbo. I cant see where the line runs, but it looks like the whole line is metal. Due to the position of it I was unable in my quick diagnosis hook my vac guage to the metal part. I went off of the rubber portion that runs under the plenum.

I was also unable to get a vac reading on the wastegates themselves due to location.

Any advice?

 

[TAC]

It was my driver side wastegate that was bad also. Does yours look rusty? Mine was. Anyway, I think if you put the car on a lift you can hook the guage up directly to the wastegate. Of course, you'll want to check the lines to see if perhaps they are leaking, causing the wastegate failure. It would be cheaper to replace them.

I thought my vacuum lines to the turbos were all rubber...

 

[SurfnSun]

nope not a bit of rust. It may be the way the wastegates are bolted up that is preventing me from getting the vac gauge on there. The hole is on the top side, I wonder if they can be rotated?