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On the right underside of the air cleaner, you'll find 2 fittings, one large, one small. The large one is NOT open, but the little one is.
This hose connects between this small fitting and the connector on the fuel pressure regulator. This is used as an atmoshperic/barometric feedback for the pressure regulator. The reason it is often disconnected, or lost is it usually gets knocked off during the wrestling match to get the tank back in place. If you've ever done this yourself, you know what I'm talking about.
As mentioned, it has little effect because the pressure regulator is open to ambient air so it still is "reading" barometric pressure, minus what ever slight increase might be within the air cleaner airbox at speed.
The main barometric sensor is the Bosch electrical connection with the locking wire clip on the right rear of the airbox, so a disconneted hose has little effect. You'll find mention of this in the factory manual, chapt 9, pages 115-116.
Hope this helps,
The ol' windbag,
Dan'l
So. Calif.
[ This message was edited by: yerguy on 2004-10-11 14:22 ]
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