[Mgs] Mgs Digest, Vol 83, Issue 7

[Glenn Schnittke]

I had something similar happen to me years ago and I forget which car it 
was. Jette & I were driving down to Ole Miss to see our son and as we 
got off the highway the engine would not return to idle. I pulled over 
and killed it and popped the bonnet. Pulled off the air cleaner cans and 
discovered that the last time I had put the cleaners on, one of the 
spacers had fallen off the bolt while I was fitting the can and had 
eventually worked its way not only under the piston, but under the 
throttle plate, holding both butterflies open.

 From your description of the event I would think either something like 
that or somehow the throttle cable jacket got dis-lodged from it's 
housing on one end or the other making the inner cable effectively about 
1/4" or so shorter. And you don't say what year or what carb you're in, 
but as was said, it might be a poppet valve gone. However, it would be 
quite odd for them both to go at the same time and if only one of them 
went you should have noticed rough running as well.

Glenn

On 4/13/2014 11:03 AM, mgs-request at autox.team.net wrote:
> Message: 2
> Date: Sat, 12 Apr 2014 21:05:55 -0500
> From: Monte Jane Morris<montejane at gmail.com>
> To: MG list<mgs at autox.team.net>
> Subject: [Mgs] Cruise control!!!
> Message-ID:
> 	<CAHEsxHq8L16yqqY+OayGN3KW2_uN7JqbtiFZQyafxxh4pufaag at mail.gmail.com>
> Content-Type: text/plain; charset="us-ascii"
>
> Damnedest thing happened to me yesterday. 20 miles into a drive, I noticed
> that I wasn't decelerating when letting off the accelerator going down
> hills. I was "idling" at 3000 rpm (60 mph) like I had cruise control.
Rest deleted for brevity