Are AC Delco Iridium spark plugs appropriate for a 2000 Pontiac Grand Prix

  • Thread starter Thread starter Ramadan N
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Ramadan N

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GTP (3800 motor Supercharged)? I had performed a tuneup with a all AC Delco 'Iridium' spark plugs around 9 months ago or so.. but im having emission complications. Im jus wondering, if the iridium type of spark plugs would cause complications to the point of a "misfire on cylinder 5" on a electronic diagnosis
 
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