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Normal boost/vacuum readings
I asked this about a year ago, but I figured I'd ask again...
Under "high vacuum" conditions (throttle closed, decelerating), what
sort of reading should I see on my boost guage. The lowest reading I
see is 0.4 bar (it is 0.5 bar at idle). I still think I have a vacuum
leak somewhere, although the car idles smoothly and seems to run fine.
However, I still can't hit a boost of over 1.5 bar no matter how hard
I try. The car is a '91 200tq20v.
My friend's '88 5000tq will drop do 0.1 bar on deceleration. I've
never seen numbers this low. My suspicion is that one of those little
vacuum thingies has got a hole in the diaphragm somewhere, but before
I go sucking on hoses, I'd like to test the list-wisdom on this.