I can see the slight wobble in shaft in the vid. Have you pulled the TB to look inside the bore for wear? (did I miss that post?)

For some reason I got it in my head you had a South Bend lathe, I "suppose" the Sassenach one will do :)

alistair

On 2012-06-21, at 11:27 PM, neil n wrote:

> Hey guys.
> 
> Great stuff here!
> 
> Some good reading!
> 
> Thanks to you all!
> 
> Though the surge is not drastic, it is intermittent and somewhat
> frustrating. Especially since the engine runs so nice sometimes. Driving
> home from work was a joy save for that surging. Generally speaking, it is
> quite smooth and has relatively good power. I love the sound too!
> 
> I have a much better idea now of what should happen. The explanation of how
> the ECU works in regards to the fuel shutoff and use of an LED makes more
> sense.
> 
> It is likely the play in the throttle shaft that is the issue. It may also
> be worn mounts allowing the drivetrain to shift and pull on the accelerator
> cable.
> 
> I have an idea involving using a stronger spring between an arm on the
> throttle linkage and intake plenum. This might help to help ensure that the
> throttle linkage comes to rest at the same spot each time. If that makes
> sense. Short youtube video I made of play in the throttle shaft. It also
> shows the spring I refer to:
> 
> http://www.youtube.com/watch?v=aEGAgefVyQY
> 
> This spring idea would be purely for testing purposes only.
> 
> @ Alistair:  I own a Myford ML7. Made in England!     Heh heh heh.     ;^)
> 
> 
> images: https://picasaweb.google.com/musomuso/MyfordML7#
> 
> 
> Neil.