That vacuum line is the one that retards the spark at idle for emission
purposes. Your spark was not retarded so it ran better.

Joe
----- Original Message -----
From: "MOST,DAVID" <most@UCLA.EDU>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Sunday, December 03, 2000 2:37 AM
Subject: poor idle update
[snip]

> I wrote last week about an intermittently buzzing fuel pump and a funky
Well, it turns out that I must have
> knocked off a very thin (1/4"?)air hose in the process of doing this work.
> This hose is located a few inches below and behind the distributor (when
[snip]