<VV> Run-on engine

[Jim Becker]

Motor/transmission mounts?

Jim Becker

-----Original Message----- 
From: RB via VirtualVairs
Sent: Friday, October 08, 2021 2:31 PM
To: virtualvairs at corvair.org
Subject:  Run-on engine

Hi!  I have a recent problem with my 1965 140hp 4-speed Corsa which may 
literally drive me up a wall.  Occasionally between shifts, the engine will 
accelerate on its own, quickly heading for the redline.  My only way to 
counter this is to quickly switch off the ignition, stay in neutral, and 
coast side of the road.  If on a highway, once the engine stops I can blip 
the gas pedal (which seems to clear up the "jam") and then restart the 
engine; once restarted, everything seems normal again.
I've spent days inspecting the topside linkage and the carpets but could 
find nothing that appeared to bind, even at full throttle.  I even added a 
small collar on the sloppy cross bar link to keep it from shifting side to 
side and replaced the return spring.  After the mods I drove the Corsa about 
sixty miles without an incident. The next day I didn't go two miles before 
the engine acted up again.  This car is making me a nervous wreak!
Before this problem I had the right-side primary carburetor rebuilt, as the 
idle wouldn't hold and eventually the engine would stall.  Not being an carb 
expert, I don't know if anything could be incorrectly installed in the carb 
causing a run-on condition.  Unfortunately I'm not able to check the 
linkages under the car, so I can't tell if there's a problem there. I could 
use the group's guidance; if I take the car to a mechanic with a lift, I'd 
like to be able to give them something to look for.  As most of you know 
it's hard to find Corvair- knowledgeable mechanics.  Help!
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