gas fumes are heavier than air
Perhaps it helps to note that the blower should suck air from the lowest part of the engine compartment because gas fumes are heavier than air. With that in mind, it seems like you could improve your system by routing a hose from low, up to where the blower intake is. Also keep in mind running the blower for a few minutes periodically when motoring to vent any carbon monoxide that leaks out through the recirculation valve or the exhaust system. CO mixes evenly with air as I understand it.
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-Dave Whaley
Pleasant Hill, CA
Last edited by bayareadave; 04-08-2008 at 01:12 PM.
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