1998 GMC Suburban Fuel Pressure and code 300

1998 GMC SUBURBAN
142,000 MILES • 6 CYL • 4WD • AUTOMATIC
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COOTERMAN
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Can anyone please tell me what Fuel Pressure should be running on this truck. The book says one thing and I was told by the parts store another.
Jun 8, 2010 at 10:10 PM
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RASMATAZ
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TBI system 9-13psi

CSI system 60-66psi

P0300 Random misfires normally caused by vacuum leaks and bad fuel
Jun 8, 2010 at 10:16 PM
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COOTERMAN
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Do you know what the KOER fuel pressure would be?
Jun 9, 2010 at 2:55 PM
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RASMATAZ
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Its suppose to maintain that pressure and drops when the injector opens dunno how much though
Jun 9, 2010 at 3:11 PM