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Date: Sun, 3 Nov 2002 01:18:59 +0000 (UTC)
From: "unknown soldier" <unknown.soldiernospamnopsamenworld.com>
Subject: Re: crankcase ventilation


if the cylinder bores are worn, the pulsing could be due to pressure in the cylinder passing past the piston into the crankcase. i think that this would require a re-bore to sort out. has the engine been excessively caned, particularly when it is cold (Saab advise light acceleration in turbo models until the engine has warmed up)?? sorry i can't be more helpful, us :-) "g c" <nbtrownopsamet.on.ca> wrote in message news:us7ortko3gta36nopsam.supernews.com... > This might be an interesting problem.....! Hope someone else has solved it > cheaply! > Car is a '92 900 Turbo, manual, about 165,000 km (100,000 miles) > When running, the oil filler pipe emits a light hazy pulsing vapour, and the > crankcase > ventilation pipe (large diameter) is under pressure, not excessively high, > but pulsating and felt on the palm of my hand. There >is< a check valve in > the small diameter line to the manifold, it is in the right way round and > sucks >out< of the valve cover. I've had higher than I'd expect oil > consumption for a while, and some drips from the valve cover gasket. > My first thought is a leaking valve stem pressurising the valve cover and > crankcase... > Anyone got any less expensive thoughts? > Thanks in advance.... > >

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