Because copper core is what is recommended for the hottest spark. Next time use NGK V-power copper plugs. I gave $45 for all 16 shipped to my door from Moe's. That's $2.87 a plug I think. Hemi's run best on copper core plugs. I just put mine in last Sat. Took about 2.5 hours because my back is trashed.

 

$20 a plug???? Time to load the bed with plugs and make a run across the border I guess I should've gotten a long-bed...

 

I'm gonna regret changing mine I know i'm gunna fuch up something lol

 

Nah man, you'll be alright. In any event post up here and somebody will help ya or PM me and you can give me a call if anything stumps you.

 

all the canadian tire in calgary and in airdrie had were autolight, which by the sounds of EVERYONE i talk to they are no good. Could not find a champion plug without a 1 week min back order. That was too late for me, cause im going on holidays , and it was not running top notch

They are working well, my mileage increased now to what i was doing when i first got it.

I like them anyways, also because i recieved them half price!

 

and by the way, buddy put v-power in his 2006...after 20k he pulled them out, there was no V left in it anymore, so thats why i did not do that....

 

kind of a rookie when it comes to messin with engines and i heard its really easy to change spark plugs but is there a DIY on how to change spark plugs without messing anything up? I wanna change mine at the end of this month

 

I'll do one up if there isn't within the next week or so while I'm doing my spring/pushrod swap. Ahh man, you live where I grew up (Scottsdale and Fountain Hills) was just out there in July and went down the Salt.

 

Don't know why. Autolite Double Platinum is what I've always used in the Hemi, just put in new and have great throttle response 16mpg city/20mpg hwy. Only $2 and some change at Advance Auto. I've got some old ones with a ton of miles and they all still looked good.

 

those NGKs holding up ok? i've been thinking about the same ones.