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fuel pressure

  1. Engine & Drivetrain
    Hello everyone, I have a 2010 GMC Acadia with about 225K miles on it, and it all at once started having these issues. Scanned for codes, had mis on every cylinder, timing too far advance bank 1, EVAP (Thats a known issue with wiring on tank), and Bank 1 catalyst efficiency low. Started by...
  2. Engine & Drivetrain
    I bought this Acadia a few months ago and suddenly noticed a surging while driving. The rpms go up and down about 500 when doing it. The transmission shifts out great with no issues. Today I checked the fuel pressure before starting it and it held at 60 psi. Then when I started it, the gauge...
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