how can u kno if you your pcm is bad have no spart .have changde all othere parts
Do you have spark and fuel? Spray some starting fluid down the throttle body. It should run a few seconds on the starting fluid. If so, it's a fuel problem. If not, it's an ignition (no spark) problem or the engine has jumped timing. Check for spark. If you have spark and it won't run on the starting fluid run a compression test. If all cylinders test very low or zero it's jumped timing. HTH. -Jim
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