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smitty123

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  • Name
    Rich
  • Location
    NJ
  • Drives
    2002 GMC Savanna 3/4 ton cargo van 5.7 gas

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  1. smitty123
    Thanks for the leads you gave me.
  2. smitty123
    Please see attached file for report. Been dealing with this for a while. Mechanics said they smoke tested and found no leaks. Fuel pressure tested at 58. Has random misfire code p0300 and lean code p0171. Has installed new, Delco cap and Delco rotor and Delco Iridium plugs. Last year tried Bosch plugs and new after market cap and rotor. Still no difference. Shows classic sign of vacuum leak as throttle increase causes fuel trims start to lower. What do you think? SavannaReport08062022_0001.pdf
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