#107196 - 11/19/07 07:38 PM
Re: 97-03 FAQ, Perf mods, common fixes read first
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Member
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Registered: 09/12/03
Posts: 14035
Loc: Fort Worth, Texas
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FUEL PRESSURE Originally posted by Blackarrow98gp:
Fuel pressure should be 48-55 psi at the fuel rail, with the key on and the pump running. Originally posted by Blackarrow98gp:
Yep, fuel pressure spec is from the '98 GM Service Manuals, and applies to S/C 3800 fuel systems. Fuel pressure spec for NA 3800 is 41-47 psi. If the fuel system drops more than 5 psi in 10 minutes, check for leaks in one or more of the following areas: Fuel pump check valve, flex pipe (part of pump assembly), valve or valve seat in the fuel pressure regulator, fuel injector(s). Inspect the fuel lines for leaks or obstructions as well.
When checking fuel pressure, bear in mind that the pump only runs for about 2 seconds with the key on. It may be necessary to cycle the ignition off for 10 seconds, then back on to get an accurate reading at the gauge.
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97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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10/03/05 03:22 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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05/13/06 07:40 AM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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AustinGTP
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08/23/06 08:30 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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AustinGTP
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09/06/06 06:22 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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02/27/07 10:27 AM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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03/31/07 01:41 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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AustinGTP
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04/08/07 06:43 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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04/10/07 04:29 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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04/26/07 05:44 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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AustinGTP
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07/15/07 09:31 AM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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10/18/07 07:21 AM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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10/19/07 07:44 AM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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11/08/07 10:17 AM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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11/19/07 07:38 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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AustinGTP
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12/27/07 04:02 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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AustinGTP
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02/13/08 06:45 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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03/15/08 04:54 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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04/07/08 07:36 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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04/10/08 05:45 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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05/24/08 09:36 AM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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08/26/08 04:03 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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11/22/08 05:15 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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12/18/08 06:57 AM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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01/06/09 08:08 AM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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01/12/09 08:24 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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02/11/09 02:36 PM
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Re: 97-03 FAQ, Perf mods, common fixes read first
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HercMan(Rob)
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05/19/09 12:21 PM
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