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Date: Wed, 28 Sep 2005 16:51:53 +0000 (UTC)
From: "Tim.." <the.farm.hates.spamnospamternet.com>
Subject: Re: SAAB c-900  won't rev out.


"sweller" <swellernospamch.fsnet.co.uk> wrote in message news:xn0e7sc4g9gqll007nospam.individual.net... > > I have a 1987 8v old shape Saab 900 2 dr saloon (big bumpers), single > Pierburg carb (similar to a Zenith CD), manual choke and electronic > ignition (no points). > > It starts and idles quite nicely but won't rev past about 3000 revs, > there's no misfire or hunting it's simply as if the throttle isn't > opening enough. The lever on the outside of the carb goes through its > full travel. > > I checked the vacuum advance and found that wasn't working, I replaced > the unit with a good one and it still doesn't rev out. I know it's ok > now as when I suck on the pipe I can see the base plate move and when I > do this with the engine running the idle speed increases. > > Any ideas? Dead easy, diaphragm has split in the Pierburg / Stromberg / Zenith CD. We used to run a Volvo 360 with the B19A engine ( Stromberg 175CD) and always carried a spare as they are apt to split without warning giving you a 2-3000rpm rev limit and very little power. Tim..

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