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code 300 misfire

  1. Engeine Misfire Obd Code 300

    Dodge Nitro Mechanical Problems and Questions
    hello all experts, need your help SXT 3.7L 2008 1 month ago I had code P0300 (misfire), replaced all spark plags, replaced intake seals, and solved the problem. Now again I have code 300 and code P1129, same symptoms, engine hesitate at low REP , I removed the intake manifold and sow some...