A few things to check:
Broken throttle cable strands preventing the return to idle.
Poppet valve on butterfly not closing all the way.
Butterfly misaligned on throttle shaft.
Mike
'79B
Dan DiBiase wrote:
> So the '76 B that is now moving again, has a very high idle, like 2000 rpm.
>Doesn't seem to settle down when
> warm, although I admittedly haven't run the car long enough to get it very
>warm... I am going to dig up and read
> John Twist's article ('These Damn Zenith-Stromberg Carbs') but figured I
>would ask about any BTDT's. I put
> Marvel Mystery oil into the dashpot of the Z-S carb but probably need to
>check the level.
>
> Dan D
> Central NJ USA
> '76 MGB Tourer
> '65 MGB Tourer (Project)
> NAMGBR #5-2328
> http://dans65b.blogspot.com/
> http://dans76b.blogspot.com/
> http://dansautoblog.blogspot.com/
> http://mywebpages.comcast.net/dibiase/Working_MG_Gallery.html
> http://dans-life-blog.blogspot.com/
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