The system was actually smoke tested and no leaks-other than the small one from base of distributor - were found. I will check runners but what is the stud that can be pulled out?
Spencer

-----Original Message-----
From: Scott <SCOTTDANIEL@TURBOVANS.COM>
To: vanagon <vanagon@GERRY.VANAGON.COM>
Sent: Tue, May 10, 2016 6:58 pm
Subject: Re: does aux air reg affect idele after warm up 1.9

very good thought.
yep..that's easy to do on the 1.9.  Common almost.

Hopefully  the original poster has listened 'all over' carefully with a
Listening Tube.
Very obvious when the hose end is very close to even a tiny intake air
leak.

Scott

On 05/10/2016 01:43 PM, David Beierl wrote:
> Check that he didn't accidentally pull a stud out of the intake
> runner where the cooling pipe crosses over the top and mounts to
> it.  That makes a nasty sneaky vacuum leak and it's easy to do, weak
> metal and plenty of leverage.
>
> Yrs,
> d
>
> At 09:04 PM 5/9/2016, Spencer Allen wrote:
>> Thanks guys for your input. I have the 1.9 with the two switches on
>> throttle body and they both are set correctly. The vacuum advance
>> works fine but the distributor does leak a little at the base
>