Date: 28 Nov 2002 01:41:37 GMT
Subject: Re: Eureka!! '89 9000 CD turbo sputter solved for $150 Canadian!!!

Someone who looks an awful lot like J Dexter <> wrote: > Salutations: > It wasn't the APC controller under the dash it wasn't the waste gate and it > wasn't the fuel pump.. Oh good - always nice to see a summary. > What is apparently happening is that oil is migrating along the bottom of the > rotor into the lower plug wire cap and grounding the #4 wire to the engine - Ah, the ol' oil-fouling, rotor-dripping, wire-shorting thing. Good find. > This situation was severely exacerbated on my engine by the addition of Bosch > Platinum plugs (reading FR7DPX on the ring) which were WAY over gapped for the > application despite claiming to be direct swap for the NGK's.. It's rare to see someone who is happy with Bosch platinums in their Saab. > There are, however, some outstanding questions left which this group might be > able to help with.. > On a simply roll over compression test - I'm reading 130-130-145-128 on the > pistons (304,000k on the engine).. Is this remarkably low? When you say "roll over", you mean turning by hand, (???) or with the starter? If it's a turbo, the compression ratio without the turbo running is low anyway, and that looks un-concerning. They're not all that unbalanced, certainly within tolerance. > I am wondering now if there is excessive crankcase pressure forcing oil through > the distributor mount (and a few other places here and there around the block).. > The crankcase vent seems to be clean and clear - but I am trying to make sure > I'm not blowing by the rings and forcing oil out of the block and head.. More likely just the O-rings in the distributor assembly at that mileage. I don't know if it's worth chasing too much into the crankcase ventilation... > If not blow-by - what should I be looking at to stop the oil leaking out from > the distributor mount? - Will I get lucky here again and find an O ring in > there? Pretty sure, yup. Dave Hinz

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