Date: Tue, 12 Apr 2005 20:29:14 +0200 From: "MH" <nomailnospamere.no> Subject: Re: Where is PCV on '86 900 8v?
> > Only on the Turbo models, it's a thimble size plastic thingy in a vacuum > > line from the valve cover to the intake manifold. > It was done on my 900 8v, NON-turbo. Are we talking about the same thing? This is a PCV (positive crankcase ventilation) check valve; http://members.home.nl/mhilvers/pcvcheckvalve.jpg from my previous '87 900T8. (It's about 4 cm long x 1.5 cm wide, maybe a 1 euro part.) My current '91 900i/16 non turbo, has no PCV valve, there is no need for it as there is always partial vacuum in the inlet manifold, contrary to a turbo where there may be overpressure. For the PCV to work, there must be a check valve in the vacuum line to prevent boost pressure getting under the valve cover and into the crankcase. My 900i actually has two vacuum lines; one thick one from the valve cover to just before the throttle opening, and a thin one from the valve cover to the inlet manifold. Both lines share the valve cover connection. The thin line shares the manifold connection with the line to the carbon cannister. -- MH '72 97 '77 96 '78 95 '79 96 '91 900i 16 http://go.to/saab96
 |
 |
 |
 |
 |
