<VV> High Idle - 1966 Corsa 140

[Harry Yarnell]

Disconnect ALL the throttle linkages. The main one at the crosshaft, and the 
ones that drop down from the crossshaft to the carb belcranks. This will 
isolate any linkage 'issues'.
Make SURE the idle speed (not mixture) screws are off the fast idle cams.
If it still runs fast, you probably have a vacuum leak. Also check to see if 
the harmonic balancer hasn't slipped, giving you false ignition advance 
numbers.

Harry Yarnell
Perryman garage and orphanage
Perryman, MD
hyarnell1 at earthlink.net
----- Original Message ----- 
From: "faith bennetts" <faithbennetts at att.net>
To: <VirtualVairs at corvair.org>
Sent: Friday, April 10, 2009 1:00 PM
Subject: <VV> High Idle - 1966 Corsa 140


Hi Guys,
Help!!!! I am befuddled. I have a 1966 Corsa 140 and can't get my idle below 
950 rpm. I have disconnected the secondaries and capped them. I have 
disconnected the linkage on both primaries from the accelerator rod and each 
other to isolate them and it still idles high even with the idle screws 
completely off the idle tang. The only way I can get a lower idle speed, 
600-650 rpm, is to retard the timing about 10 deg. I have a Pertronics II. 
Would this be affecting the timing? Do I have to back the timing off from 
the book setting of 18 deg BTDC? Are there any other things that I can try 
to get the idle down?

Thanks in advance for your replies.


Jim Bennetts 1966 Corsa vert. 140 4-spd
Akrom, OH
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