I assume you are talking about DCOEs or a DGV series
or dual ZS's?
If it is refering to playing with the fuel/air ratio adjusting screws
on a DCOE, nearest the manifold on top of the carb.
If you have the proper 'fixed' idle jet selected, this screw
will be approximately 1-1/2 to 2-1/2 turns out from fully seated.
1)You set the idle speed as appropriate with the idle speed
screw on the side of the carb
2) play with these two fuel mixture screws to get the maximum rpm
and smoothest idle.
3)re-adjust the idle speed setting on the side of the carb
as appropriate to correct the idle speed.
repeat steps 1-3 as required.
Paul Tegler wizardz@toad.net http://www.teglerizer.com
OBie - '73 BGT - daily driver
http://www.teglerizer.com/mgstuff/ob_description.htm
Punkin' - '78 Spitfire - corner ripping screamer
http://www.teglerizer.com/triumphstuff/spit78.htm
Lil' Greenee - '73 RWA Midget - lady killer
http://www.teglerizer.com/midgetstuff/index.html
-----Original Message-----
From: Bill Saidel <saidel@crab.rutgers.edu>
To: mgs@autox.team.net <mgs@autox.team.net>
Date: Friday, April 07, 2000 10:41 PM
Subject: Advice wanted: interpret this passage in the tuning procedure?
>In the sequence for tuning, the following is stated:
> "Turn each jet adjusting screw the same amount clockwise to enrich, or
>anti-clockwise to weaken, until the FASTEST rpm is indicated, then turn
>each screw anti-clockwise until the engine speed just begins to fall."
>
> What does FASTEST rpm mean in this context?
>I mean, my tach goes to >5000 rpm but I doubt that that is what is meant.
>
>
>Bill Saidel
>
>
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