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How do you test a fuel pressure regulator on a 1996 4.3 Chevy s 10?
Wiki User
∙ 13y ago
With fuel pressure gauge attached and engine running, briefly and I mean briefly, pinch off the return fuel line while watching the gauge. If the fuel pressure spikes the regulator is working. The normal pressure of the fuel system before you pinch off the return line would be 60 to 66 psi.
Wiki User
∙ 13y ago
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