John, do you have a "boost" leak, or vacuum leak?

I have a vacuum leak in my saab, which I am trying to track down. But I have a problem. Usually, the vacuum comes from the intake. So I just crack the propane torch and run it along the lines and wait for an increase in RPM.

The Saab is turbochrcged so the intake is under pressure not vacuum.
So, how do turbo cars make vacuum?

How do you trace a vacuum leak in a turbo car?

A leak on the presure side of the turbo, the only real way to trace it down is to take off all the parts down stream of the turbo, and take them to a radiator shop or the like and they should be able to pressure test everything, intercooler, connectors, and tubing. You should still have some connections to the intake side of the turbo piping for crank case breather and such, which I imagine, you should still be able to trace the same way as before. Not too familiar with SAAB turbo engine bays so I'm not sure how easy of a job this would be for you.
Steve.

Steve
Guards Red 1999
I'm not a race car driver, but I play one in 2nd and 3rd gear

It is not in the intake per se. It is somewhere around the brake booster.

I ocassionally get a hiss sitting at a light. It is very interrmittent. But I would like to trace it. I know it is not the booster itself - that I can see. I am assuming it is a line or connection.

Grant

gee-lenahan-at-gee-mail-dot-com