spark plugs

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03-19-2013, 11:47 AM

Terry

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spark plugs

Wanting suggestions for new spark plugs. What brand and number are the you guys having good results with?

Thanks

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03-19-2013, 12:16 PM

ronbros

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Iridium, any brand,(NGK,or Denso), cross over to factory heat #.

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03-19-2013, 12:23 PM

JameyXJ6

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I had very bad luck with Champion. Went through 24 plugs in about a week, so I switched to AC plugs and haven't had a problem since.

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03-19-2013, 12:25 PM

RonaldP

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If you have the owner's manuals, look what the factory list. That is your best bet. The ignition system was designed as a complete unit with each part at a certain spec. I had iridium's in my 95 4.0 and received numerous fault codes about misfires on a trip. Hennessy Jag here in Atlanta told me to go back to the much cheaper champion plugs listed in my manual. Mileage improved and misfires went away and yes I used an anti-seizecompound.

Last edited by RonaldP; 03-19-2013 at 12:27 PM.

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