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closed injectors

  1. 01-04.5 LB7 Duramax Powertrain
    Hey guys i'm looking for clues. In the last 1000 miles i have had 3 occaisions where 1 or more injectors locked up (my term to differentiate from failed) evidenced by knocking and smoking like hell, and then after throttle manipulation started functioning again. The first time; i was pulling an...