also pull out your plugs and compare them see if they are burning right or if the are all clean like new, if coolants getting in the cylinders it cleans everything

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1993 Ford Ranger 4.0 5 Speed bw1354 manual Tcase swap 4in aluminum driveshaft 6in suspension lift 3in body 35 bfg km2's cragar soft 8s nite shaded tail 3rd brake light corner visor lights 2.5in flowmaster exhaust k&n filter hid headlights led lights everywhere warn hub conversion chopped antenna Kenwood deck pioneer speakers & 10in sub