Did a tune up on 96 gmc jimmy V6 and still running rough with hesitation and flashing check engine light. what my next step to find the problem
Have vehicle scanned for code[check engine] problem may not be tune up sum auto stores such as auto zone/ advanced auto do it for free the code gives u a place to start
but what code-- a misfire in what cylinder -- the misfired cylinder might have bad wire, wrong gap, crack at distributor -if random misfire at different cylinders could be anything from fuel -pump-filter -throttle body- vacuum leak-distributor-evap-system multi choices if random.recheck the parts that were put in during tune up wires /no breaks plugs/ right gap heat range dist vacuum line no leaks wires and cap clean proper seat like i said multi things can be problem
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no had a scanner check it still same code misfire random misfire what about the coil?
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