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Date: Thu, 7 Jan 1999 21:32:45 -0000
From: "chris Baillies" <christiannopsamlies.freeserve.co.uk>
Subject: Saab 99 popping on over-run


My '81 saab 99 sometimes pops through the exhaust when decelerating in 3rd or 2nd gear, is this indicative of a weak mixture/over-advanced timing? It's had new points, plugs, leads dizzy cap and rotor, mixture set at 3% C.O. Other problem is when cold it tends go a bit-lumpy on full choke after 10 seconds or so, fine on half choke. I know some carbs have a load sensitive choke (vacuum pull down) but mine doesn't appear to have this. (Zenith 175 CDSEVX) chris

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