[Dantilla]

Look for the easy stuff first.

Friend had a 1980 Mustang with the turbo 4-cylinder. Called me up, asked if I'd help trace down a turbo problem.
Popped the hood. Found a small-diameter hose that was partially broken at the nipple. Clip off the torn end, push it back on the nipple, and get to work.
Looking down, it's obvious the turbo controller must come out from the bottom. Get under the car, and it's obvious the turbo controller must come out the top. Grrrr..

After two hours, us two idiots had the turbo controller out. Now to figger out how it works.

Hmmm... A little vacuum hose attaches here. Where does the little vacuum hose go? trace it to the other end, and...... Yup. We fixed the problem in the first five minutes. Broken vacuum hose.

Lesson lernt. Sorta. I'm still an idiot pretty often.