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On 14 Feb 2005 at 14:57, Iturzaeta , Joseph wrote: > I have been following the conversation about the fuel pump. I had a > question of my own. In my hanes manual it says that the fuel lines are > pressurized at 28 P.S.I. Does the pump itself put out 28 PSI? and how > much of a flow is that (ex: 50 GPH)? I don't think I've ever seen an official listing of the flow rate. The Idiot's Guide has something in it about how long it should take to fill a pint jar, I believe, but I've never needed to check it. The pump just pumps at a constant rate, with excess fuel just bled back to the tank. The pressure is regulated by bleeding off excess fuel. In this way the fuel supply is always there at conatant pressure, until the engine's demand exceeds the pump output. In our case, this never happens unless the filter or the screen is blocked. -- Jim Adney jadney@vwtype3.org Madison, WI 53711-3054 USA ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~