Bradley,

Numerous people on the list advised me to crank this connection down tight.
The ears of the throttle body and the intake plenum should almost come into
contact.

Like you, I replaced mine in the process of fighting a manifold vacuum
leak.  I think I still have a leak.  You've done a thorough job replacing
possible leak sources!  You've probably already considered these other
sources but since you didn't mention them don't forget to examine the brake
booster, auxillary air regulator, and distributor/fuel pressure regulator
vacuum circuits.

Scott Terry
'85 Westy "Pearl"
Santa Barbara, CA

>Date:    Thu, 16 Aug 2001 20:09:06 -0400
>From:    Bradley Flubacher <flubach@HOME.COM>
>Subject: throttle to intake body tightness
>
>How "tight" should the two phillips head screws be that hold the throttle
>body to the central intake manifold?  I was afraid to overtighten, but I
>still experience tell-tale signs of a vacuum leak.  My performance is
>drastically improved since I replaces my injector seals, intake manifold
>boots, intake manifold gaskets and the throttle body gasket..