spark plugs

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Mar 19, 2013 | 11:47 AM

Terry

Thread Starter

Senior Member

Joined: Jun 2009

Posts: 143

Likes: 26

From: So. California

spark plugs

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

Thanks

Mar 19, 2013 | 12:16 PM

ronbros

Veteran Member

Joined: Jul 2010

Posts: 7,362

Likes: 1,241

From: Austin tx and Daytona FL.

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

Mar 19, 2013 | 12:23 PM

JameyXJ6

Veteran Member

Joined: Apr 2010

Posts: 2,055

Likes: 194

From: New Hampshire

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.

Mar 19, 2013 | 12:25 PM

RonaldP

Senior Member

Joined: Sep 2012

Posts: 560

Likes: 142

From: Lawrenceville, Georgia

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; Mar 19, 2013 at 12:27 PM.