Thread: Spark Plugs
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Old 06-11-2005, 06:26 PM
flair666369 flair666369 is offline
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Re: Spark Plugs
I have a 98 GMC Z-71. when i did a tune up i put MSD super conducter 8.5 wires and champion truck plugs, big mistake i had a very rough idle. I recently changed my plugs to NGK platinums and the idle was smooth again. I vote NGK.
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