I think I have a similar setup on my TR3A SU's - the variable idle feature.
If the idle is too high I lift the accelerator with my toe, if it's too low
I give it a little goose. I imagine the problem could be caused by a
sticking vacuum advance (or is retard?), but what I was planning to do when
I got one of those round toits was try and torque up the springs on the
accelerator linkage and then readjust the idle. I'm figuring that there's
just not enough force to bring the throttle back to it's lowest point
without an occasional assist from my toe. If there was enough tenison it
would at least always bring it back to the same place and I could adjust the
stops accordingly. If the condition persists, then it probably isn't
mechanical.
Just a thought,
Bob
----- Original Message -----
From: "David Templeton" <davidt@opentext.com>
To: <davidt@opentext.com>; <triumphs@autox.team.net>
Sent: Sunday, June 15, 2003 3:13 PM
Subject: Re: TR3a SU carbs & misc
> Well this is getting more confusing to me. The '3 will return to idle
> sometimes and others time simply die. Checked the plugs and they are dry
and
> tan.
>
> When she does idle, it is at 1300rpm and when I try and bring it down, the
> motor starts to shudder quite a bit.
>
> Any ideas? Any more info needed? Thanks.
>
> David Templeton
> '59 TR3a
> '74 Spitfire
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