Idle is set to 1000rpm, as specified, the only difference in my setup is
that the vacuum advance is disconnected.
Regards,
Charles
'74 Midget
'68 Sprite
Bloomfield, NJ
cdsorkin@ix.netcom.com
"How about we duck inside for a Hen?"
----- Original Message -----
From: Trevor Boicey <tboicey@brit.ca>
To: Charles Sorkin <cdsorkin@ix.netcom.com>
Cc: Spridgets List <spridgets@autox.team.net>; MGs List <mgs@autox.team.net>
Sent: Sunday, September 03, 2000 4:49 PM
Subject: Re: Loading up... How to prevent it?
> Charles Sorkin wrote:
> >
> > Dear List:
> >
> > I think I've discovered why my RPMs decline after about 30-60 seconds at
> > idle. I noticed that my exhaust fumes go from being invisible to
slighly
> > dark, and the running get rougher. I'm assuming that this is the
phenomenon
> > called "loading up," but I can't find any references in the manuals
about
> > why its happening.
> >
> > How do I prevent this from occuring?
>
> What is your idle set to?
>
> If the air flow isn't fast enough, the fuel vapour will fall out
> of the mixture and collect on the walls of the manifold. Then sometimes
> it'll get sucked through in globs and sheets and will cause rough
> idle and black smoke.
>
> If it's bothersome, you can decrease it greatly by raising the
> idle a bit.
>
> I think my 70 MGB was supposed to be set to 600 rpm, and it
> would even idle smoothly at 500rpm. But after a minute or so
> of either it would start to chug unless I "blipped" the idle
> to clear it out. Annoying at stop lights, because all the
> civics thought I wanted to race.
>
> I raised the idle to about 850rpm and problem solved.
>
> --
> Trevor Boicey, P. Eng.
> Ottawa, Canada, tboicey@brit.ca
> ICQ #17432933 http://www.brit.ca/~tboicey/
> The stoplight in front of my house is currently: AMBER
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