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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
System Pressure I think is the hurdle pressure the fuel pumps have to achiave for the fuel head to be sure it has enough fuel to operate correctly.

Increase this to much and the fuel pumps might not have the ability to support it.

If the fuel pumps can not deliver at a pressure above the system pressure setting, no fuel will blead off out of the valve you have shimed and then go back to the fuel tank.

I could be wrong.
Old 03-10-2009, 02:21 PM
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