Date: Wed, 04 Jul 2007 17:05:42 GMT From: Paul Halliday <pjghnospamyonder.co.uk> Subject: Re: 81 900T woes
in article 468bbc01nospam.broadpark.no, Frode at fhnospammica.no wrote on 04/07/2007 16:25: > Paul Halliday wrote: > >> in article ea598e782e6c9947079a70a8f77c659anospamlhost.talkaboutautos.com, >> hippo at johnhnospamthis.shoal.net.au wrote on 02/07/2007 13:48: >> >>> The trusty old 81 900T auto sedan failed to proceed for the first time in >>> over three years. Started on 3 cylinders, ran for 300M and cut out >>> completely half way round a roundabout. Coasted off. Turned over but no >>> interest in firing, except occasionally on one cylinder. Plenty fuel & >>> pump running. Gave up just before flattening battery & towed to local >>> w/shop. One cracked fuel line and drowned plugs (funny that). Valves & >>> timing chain seem ok, but compression *not* - 80, 65, *25*, 80. Now >>> running basically ok again. Car uses *no* oil or coolant between changes. >>> Ideas? Busted rings? Worth a pulldown or likely cheaper to just swap in a >>> known good powertrain? Any advice welcome. Cheers >> >> I'd be inclined to pull the head off and see what that reveals. > I second that opinion. Those compression figures indicate that you may have > a burned exhaust valve, or that might be what you end up with unless you do > something. > > And eventually a cracked head too -- like I did:-P The 8V head is certainly prone to cracking and could well lead to that bad compression on cylinder 3 with an intact head gasket keeping oil and water out of the equation. Paul 1989 900 Turbo S http://saab.go.dyndns.org/
