Re: No irregular pressure? - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: No irregular pressure?
Posted by Nickshu (more from Nickshu) on Thu, 5 May 2005 04:08:54
In Reply to: No irregular pressure?, Joshua, Wed, 4 May 2005 22:39:50
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No relation. THe fuel pump does not function to maintain pressure on the intake side of the pump (in the tank). It only produces pressure on the fuel system side (maintained via a check valve). I think on more modern cars (OBDII) there are more stringent requirements on how the fuel tank is vented to avoid (gasp!) leaking gas fumes into the environment. That said, I've owned 5 Saab's over 15 years and never had that hissed like you describe.
My 95 900S gets about 20-21MPG in the city. I have always thought this is poor for a 150hp 4-cyl, but my car is in top shape and I've never been able to get it any better (Techron, tuneups, new o2 sensor, etc).
Nick
95 900S 123K
posted by 192.138.70...
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