What if you push the shaft down manually? Is it maybe just stiff or getting
caught up? And is your timing correct?
Andrew Uprichard
Jackson, Michigan
-----Original Message-----
From: Triumphs <triumphs-bounces@autox.team.net> On Behalf Of Bob Leaver
Sent: Tuesday, May 12, 2020 5:58 PM
To: Triumphs@autox.team.net
Subject: [TR] fast idle problem
I have a 1965 Triumph TR4a that I rebuilt the SU carbs and now I can't get
the idle below about 1500. I've tried all the screws and checked all gaskets
and nothing. The only possibility I can come up with is air getting around
the shafts. When rebuilding the cars I didn't replace the shafts because I
didn't have a reamer. Moss has a reamer for $290.00. I looked on line and
can't find a less expensive replacement. The book states the size of the
reamer is 5/16" + 0.0105". What kind of measurement is this? Can you use a
5/16" reamer?
Does anyone have ideas how I can get the idle down? Does anyone know of a
cheaper reamer to use? Thanks, Bob
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