Started with misfire cylinder 2, 4, 6. Replaced spark plugs (NGK) ignition coil packs (both banks), valve cover gasket, intake manifold gasket, fuel injector on cylinder 6 and all 6 injectors o-rings replaced. 2, 4, 6 no longer misfire. Now I have cylinder 1, 3, 5 misfiring. Disassembly of intake manifold, specifically cover plate and injector cover internally of manifold, was done and reassembled with new sealant. Knock sensor on bank 2 was replaced and no longer have code for p0300, p0301, p0303 and p0305 is present. Compression on all 6 cylinders are within spec. What else could be wrong?
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Friday, August 26th, 2022 AT 11:09 AM