Re: Normal boost/vacuum readings

[STEADIRIC@aol.com]

>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.

Remember firstly that the stock dash gauge CANNOT Be trusted....  I get 
over 64" hg on my manifold pressure gauge which equals 2.17 bar absolute 
my dash gauge reads 1.7 sometimes, 1.8 a bunch, and 1.9 at times....  My 
lowest Vac reading was 6"hg or .2 bar.....

Later!


Eric Fletcher
'87 5KCSTQIA2RSR2B
St. Louis, MO

STEADIRIC@aol.com