[Mgs] MGA high idle

W. David Houser mgs4dave at tampabay.rr.com
Mon Apr 19 18:25:22 MDT 2010


Listers,
Problem solved and thanks to all who offered advice. Seems there is a  
bracket under this particular carb that the throttle cable got hooked  
onto and caused the throttle to race on a high idle. Kudos to those  
who called it. Once that was detected and idle reset to 800rpm, car  
running just fine as it was before the hang-up. Something simple that  
was overlooked first time through. Many thanks,
Dave


On Apr 19, 2010, at 3:52 AM, Paul Hunt wrote:

> The usual things like cable hanging up, butterfly sticking open.   
> People often say 'vacuum leak' but whilst that *will* cause a higher  
> idle for a given butterfly opening, the idle screw should always be  
> able to slow the idle down to a stall even with a vacuum leak, 'cos  
> the engine can't run on air alone.  The only time that won't be the  
> case is if there is an alternative path past the *closed* butterfly,  
> which could happen if the butterfly spindle and bushings are very  
> worn.
>
> PaulH.
>
> ----- Original Message -----
>> Friend has been having some probs. lately with her MGA. Latest came  
>> overnite when she started it up. It idles up to about 3000 rpm and  
>> wouldn't come down preventing her from driving it to a car show.


More information about the Mgs mailing list