Date: Mon, 14 Aug 2006 22:20:52 +0100 From: "Charles C." <c.k.christacopoulos.removeme.nospamee.ac.uk> Subject: Re: Last Chance for My '85 900
CMM wrote: > I've owned a 1985 900 (8V, non-turbo) for five years. For awhile I've > had trouble with it searching (changing RPMs) at idle. I also had a > leaky cold-start valve which was flooding the motor and preventing it > from starting. I disconnected the wiring and that helped, but it still > seemed to be leaking oil so I removed the fuel line from it. > > I don't know if the problem I have now is related and, if so, how. It > runs rough and lacks power. It idles at about 500 RPM. When driving it > has a jittery feeling like I up-shifted at too low a speed (even > though I didn't). It is slow coming up to speed and I have a tough > time getting over 45 MPH. > > What's odd is that, when the car hasn't been run and I first start it, > it runs wonderfully for about 45 seconds or 2 miles before the > problems start. It idles at ~750 MPH and runs well but not for long. > > Another thing is, with the car out of gear and the motor red-lined,it > puts just a little bit of black smoke out of the tailpipe. But, about > every 5 seconds, it burps a bigger cloud of black smoke. > > Here's what I've done: > * Checked injectors (ionization is acceptable on all four) > * Replaced plug wires with OEM (they were showing a bit of blue spark > at ngiht) > * Replaced plugs with OEM > * Replaced distributor cap & rotor with OEM > * Replaced fuel filter (routine maintenance) > * Replaced injector seals (after checking ionization) > * Replaced oxygen sensor (routine maintenance) > > I checked compression and it is a low on #3. Readings are: > #1 -- 130 > #2 -- 120 > #3 -- 90 > #4 -- 135 Hi How have you tested? Removed all plugs, take out fuel fuse crank engine? If yes, please try once more ... and add a little engine oil through each plug hole (Don't know though what happens if you have a catalyst and oil goes down the exhaust pipe). The added oil should show you if you have worn out rings/cylinders. If compression goes up then they are worn ... Hope I am wrong! Do you loose coolant? If yes, compare also the plug on No. 3 with the others. Heads of that era, (definitely on an 1982/83 car ... crack on cylinder No.3. The crack is not repairable. This would explain why the engine does not work once it has warmed up ... > > I can understand there might be a bit of sumble because of this but I > don't think all the problems I'm having are related. Especially since > it runs fine for a little on first being fired up. > > I'm ready to sell but I don't want to unless I absolutely can't get > this figured out and fixed. > > -- Christian If it helps at all. Regards Charles -- Please remove _removeme_ to reply.
