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fuel pressure


disc257

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Nazareth Pa
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1997
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Mazda
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4.0
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Manual
what should pressure be on a 97 b4000 with key on and at idle.
 


RonD

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35-42psi is spec.

And it should hold with key off, might drop to 25-30psi but no lower, if it continues to drop then there is a leak, or fuel pressure regulator or fuel pump check valve has a problem.
 

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