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  • shanna ·
    Hi, my 2007 X spark plugs 1 and 3 keep getting a dry black color on them po 301 this is causing it to make knock noise and lacks a bit of power. Replaced 2 knock sensors, coils, spark plugs, camshaft sensor and crankshaft sensor. We gutted all the cats we did notice they had some breakage in them so hoping none went in the motor. Just wondering your thoughts on this thanks 110,00 km very low kms
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