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Cutlass Series Includes Cutlass Ciera, Cutlass Cruiser, Cutlass Calais, Cutlass Supreme, Custom Cruiser, as well as the GM N-Body subforums.
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Old 12-14-2008, 12:01 AM   #1
cjc20059
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93 cierra fuel question

I'm working on a 1993 cutlas cierra. Does anyone know if there should be fuel pressure in the system after the vehicle is turned off. I'm trying to diagnose if it normal or if the problem may be the fuel pump or if there is a relief valve that may be causing bleed off.
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Old 12-14-2008, 02:18 AM   #2
discnik
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Re: 93 cierra fuel question

There should be 34 - 46 P.S.I. ibn the fuel rail if this is a M.F.I. 3.3 L engine.
If fuel pressure is bleeding off it could be any thing from leaking injectors to the fuel pump.
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