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41 to 47 psi.
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10 to 12 PSI as it varies slightly from factory. The answer provided above applies to 1995 and up s10s with the 4.3 v6 and the newly added MPFI fuel injection system. In 1992 the fuel injection system was TBI (throttle body injection). TBI fuel pressure was set at 10 to 12 PSI from the factory.
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7y ago

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