So had a dead miss on #3 cylinder found bad injector replaced it. New plugs, coil pack wires and fuel filter. Checked compression 250 psi pulled valve covers check valve train all good. Fired it up miss gone. Test drive no power started back firing under heavy throttle. Check for codes code 11 = no faults found. What am I missing here. Did check plug wire connections and firing order it idles fine with no miss.
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