That's what I like about this list. I'm getting an education. I assumed a
potential rich condition due to the strong smell of gas from the exhaust for
the first few minutes of idle. No visible sign of any smoke. Plugs are
always a nice tan color. Throttle response is good, although the engine
will sometimes die when coming to a stop within the first few minutes of
running. If I'm really easy on the throttle for the first few minutes of
running, I have no problems.
Thanks Guys,
Dave
Fresno CA
93 GTS.
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: "Multiple recipients of list" <[EMAIL PROTECTED]>
Sent: Monday, September 25, 2000 8:07 PM
Subject: Re: Rich when warm..........
> In a message dated 9/25/00 8:14:27 PM Eastern Daylight Time,
> [EMAIL PROTECTED] writes:
>
> << My GTS seems to run a bit rich when it's cold.
> >>
> Doubtful, a cold engine tends to run leaner than a hot engine. This is
true
> to the point that is is used as a diagnostic test for rich lean
conditions.
> If the engine idles better when it is warmed up than when it is cold, it
is
> lean when it is cold. If it idles better cold than when it is warmed up,
it
> is too rich. Of course, this refers to idle circuit, since no one would
rev
> an engine that is not up to operating temperature yet. The GTS uses a "wax
> pellet" to richen the mixture at an idle and allow the mixture to lean as
the
> warmth of the engine takes over. An engine that is rich when it is cold is
> richer when it is hot. Therefore, the running symptoms would be normal
> running cold with performance deteriorating as the engine warms. It is
> possible that an engine could have a problem so severe that it is either
so
> lean or so rich that it runs bad whether warm or hot, but generally, there
is
> still a noticable difference in running between cold and hot. The good
news
> about a problem that severe is that it makes it that much easier to find.
> Rich is accompanied by black smoke and black plugs. Rich also sounds like
a
> stumble or blubber. Lean is a hesitation or resistance to take throttle.
> Spark plugs come out white, possibly glazed white. At an idle, a lean
> condition is indicated by a hunting or fluctuating idle. A rich condition
> produces an idle that gradually dies away.
