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san rensho · 07-07-2011, 04:53 AM

As far as the OAS goes, you can test it by removing the oil cap while the motor is running. Put your hand over the oil filler to seal it and you should feel just the slightest amount of vacuum. If its hard to get the cap off or if you can really feel a vacuum, then the AOS is bad.

07-07-2011, 04:53 AM	#2
san rensho Registered User Join Date: May 2011 Location: Miami florida Posts: 1,591	As far as the OAS goes, you can test it by removing the oil cap while the motor is running. Put your hand over the oil filler to seal it and you should feel just the slightest amount of vacuum. If its hard to get the cap off or if you can really feel a vacuum, then the AOS is bad. __________________ Current car 2000 Boxster 2.7l red/black Previous cars 1973 Opel Manta 1969(?) Fiat 850 Convertible 1979 Lancia Beta Coupe 1981 Alfa Romeo GTV 6 1985 Alfa Romeo Graduate 1985 Porsche 944 1989 Porsche 944 1981 Triumph TR7 1989 (?) Alfa Romeo Milano 1993 Saab 9000