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engine code

  1. General Maintenance
    Hey guys, been a minute since I've been on here but I need some help. My 07 G5 GT is throwing a p0171 code (lean on bank 1) and I'm not sure why. Thought it might be injector on my 3rd cylinder after a buddy and I took a listen to them, I took out the spark plugs from cylinders 3 and 4 and...