Re: I've been trying to figure this out for years. - Saab 9000 Bulletin Board - Saabnet.com
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Re: I've been trying to figure this out for years.
Posted by Simon S (more from Simon S) on Fri, 16 Dec 2011 09:09:26
In Reply to: Re: I've been trying to figure this out for years., DanaH, Fri, 16 Dec 2011 08:00:29
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Its not all that complicated in theory: There are three lines that go from the tank area to the engine bay
- High Pressure Fuel, from the Pump to the fuel rail.
- Low Pressure Fuel return, from the FPR back to the tank.
- Vent
The vent line connects from the top of the filler neck (what dana apparently broke) to the charcoal canister. Nothing should impede the flow of the vent line. The carbon canister is open to the air. Thus, the tank can breath, through the carbon canister.
Then there's a purge line on the canister, which can suck air through the canister, and into the intake manifold (via the control valve).
posted by 24.22.62...
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