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bad cold start

  1. Drivetrain Tech Center
    I have a '98 GC Laredo with the I6 in it. After a fresh start, it runs smooth from 1-3 minutes, then chugs and sputters, sounds like its trying to suck air. After a minute or so, it settles down and runs fine. No codes pop up, no dying or stalling. A new fuel pump helps, but still rough runs on...
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