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Unread 11-10-2013, 11:34 AM   #1
JTPhoto
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FYI for those thinking of changing plugs. I know this has been posted a few times here and there but I just wanted to throw in another account of why people suggest you stick with the factory spec Champion plug.

Today I Changed back to factory spec Champion plugs from NGK iridium. Tell tail sign was slowly decreasing fuel mileage over the last month and a half.

Original Champion plugs changed to NGK Iridium at 107,000 klm. NGK Iridium plugs are done already at 150,000klm (only 43,000 klm). By done I mean worn out. They look clean however, the gap is well over 0.060 upwards to 0.080". When I removed the original Champion plugs at twice the mileage they were no where near that far out.

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Unread 01-19-2014, 10:49 PM   #2
Spook45
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yea, I switched to a Different plug and Im not thrilled with the results, I mean its not bad, but its not as good as it should be. Just crossed the 100k line so Im about to Wires and plugs and go back to the original hardware. Researching plug wires now, Leaning toward the BWDs from Oreillys(berg-Warner) but im still not sure.
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Unread 01-20-2014, 02:29 AM   #3
SubAtomicGenius
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Platinum, iridium, titanium, kryptonite... bunch of sales gimmicks to move expensive product. Can't beat the OEMs IMHO for price and performance.
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Unread 01-20-2014, 04:31 AM   #4
brianjw
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Quote:
Originally Posted by SubAtomicGenius
Platinum, iridium, titanium, kryptonite... bunch of sales gimmicks to move expensive product. Can't beat the OEMs IMHO for price and performance.
If the oem could have produced more power or better economy simply by using a different plug, they would have used it.

Seems common on many brands. A lot of ford people had problems with aftermarket plugs not running in the correct heat range or something.
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Unread 01-20-2014, 03:06 PM   #5
SubAtomicGenius
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I don't trust plugs when the electrode is the size of a pin... gimme the OEMS.
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Unread 01-20-2014, 04:22 PM   #6
RockyClymer
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I generally agree, plugs are plugs, I used the NGK Iridiums because they came with my SC kit.
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Unread 01-21-2014, 09:00 AM   #7
SoK66
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Interesting comments re: the iridiums. I'm only at 39k on my '09 but have been thinking about changing plugs & wires when it hits 50k. One of our club member's '08 started having a slight rough idle issue at 50k. It finally tripped a MIL code, misfire on #2. She replaced the OEM Champions with Autolite iridiums and the issue disappeared. Will be interesting to see how long they last.
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Unread 01-22-2014, 01:30 PM   #8
blackjeep05
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Been running the Autolite Irdium's in mine forget the part number but, have put almost 20,000 on them no problems. Jeep runs very good. On a waste spark system you really want to at least run double platinums but, Iridiums are much better if you can afford them.
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Unread 01-22-2014, 08:33 PM   #9
JTPhoto
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The NGK Iridiums were good, so I thought, until 43,000klm.
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2008 Black and Khaki Sahara Unlimited. Auto, Tow pkg, Dual Tops, MyGig, Trax-Lok rear diff. 3.5" Rock Krawler fr springs, rear TeraFlex 2.5 BB, 35x12.50x17 Pitbull Rockers on Blackrock Viper Alloys, Flex-o-lite trans cooler, Mr Grille billet grille inserts, AEV Prem Bumper ETC.. AND a Locked and Lifted Honda Foreman for when the trails get real tight
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