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Path: utzoo!linus!raybed2!gxm
From: gxm@raybed2.UUCP (GERARD MAYER)
Newsgroups: net.auto.tech
Subject: Re: Proper Needle Sizes for SU HS-4 Carbs. on Detoxed MGB et. al.
Message-ID: <1016@raybed2.UUCP>
Date: Fri, 1-Nov-85 08:47:09 EST
Article-I.D.: raybed2.1016
Posted: Fri Nov  1 08:47:09 1985
Date-Received: Sun, 3-Nov-85 12:31:15 EST
References: <1154@homxa.UUCP>
Organization: Raytheon Co., Bedford MA
Lines: 10

On my '71 MGB with dual SU carb I can easily test if the mixture is too
rich by lifting the manual piston rod slightly while the engine is at idle.
If it is too rich the engine slows and does not return to the same idle 
speed. When it is just right the engine speed stays the same as I lift the
piston rod. I have found this to be a sensitive method with a little
practice. Noise: I had the same problem and in my car it turned out to
be the vapor collection canister in the trunk was loose enough to hit when
I took OFF!!!
						Gerry Mayer
						uucp  linus!raybed2!gxm