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  1. 91 Z28 5.7 TPI-will not run properly

    Troubleshooting
    1991 Camaro Z28 5.7 TPI Car will not idle, runs rich, boggs or cuts off when throttle opened, basically spitts and sputters really bad. Timing will advance sometimes, and sometimes it wont. I have replaced the ecm (3 times), knock sensor, map sensor, coolant temp. sensor, Ign. module, plugs &...
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