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Date: Sat, 21 Sep 2002 14:14:57 +0100
From: "Steven  Jack" <mailnopsamaurs.fsworld.co.uk>
Subject: Re: SAAB 9000 low power num3 cylinder fault


Hi thanks for the reply's I have had alook today and this is what I have found. The engine runs roughly and idles poorly. Removing number 3 lead from the plug has no effect all the rest do, though number 2 has less efect than 1 and 4. I swapped the plugs and leads around - noeffect. Num 3 plug is clean the others are all black soot. Number 2 is slightly wet. Running the engine I can remove injector leads for 2 or 3 with no effect, I am confused as 2 seems to be burning something to turn the plug black. If I unplug 1 or 4 the engine dies. Listening to the injectors with the screwdriver trick gives a very loud tick on 1 & 4 and much quiter on 2 & 3. I will try swapping injectors any other ideas welcome. Thanks again guys. Steven Steven Jack Scotland, UK "KeithG" <noonenopsamspring.com> wrote in message news:amd8e2$ba3$1nopsam9.atl.mindspring.net... > Did you swap plugs to see if it is a bad plug? You did verify that the > wire does get spark? A broken oil ring will probably foul a plug, but a > new plug should still ignite the mixture. It sounds like an ignition > problem to me. > > KeithG > > Steven Jack wrote: > > Hi I have a 1990 9000S 2.0L which recently developed low power, a new head > > gasket was fitted. There is compression on all cylinders, but removing HT > > lead from num 3 makes no effect on the engine running, removing any other > > causes it to falter. A mechanic suggested that the oil control ring could be > > broken. Anyone care to comment . > > > > Thanks > > Steven Jack > > Kilmarnock > > Scotland > > > > s.jacknopsam.net > > > > >

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