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    1998 Chevy 1500 random misfire

    Its a 1998 1500 99,800 miles. I have replaced intake gaskets (upper and lower plenum) updated the injectors to mfi, replaced every thing I can replace on the intake. Coil, ign module, distributor/button/cap, map sensor, oil pressure switch (while it was easy to get to), plugs, has Napa belden...
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