coils or plugs?

[2013rammer]

I noticed just a lil bump will parked today like a small miss could just be me but was wondering how many miles were yall at when yall changed the coils and plugs out im at 65k now

 

[Rlaf75]

I haven't changed anything yet but changing the plugs will never be a bad thing but i doubt you will need to unless it continously skips. The coils however, aren't really something you have to change unless one does fails. To check coils or detect a misfire you'll need a very good expensive scan tool or take it to a repair shop. I wouldn't worry about it until or if it becomes more pronounced

 

[2013rammer]

Ill prolly just change the plugs then if i can find 16 of them lol after the new cats exhaust drop in knn and fresh oil it prolly brought the miss out

 

[Rlaf75]

Is it a steady or constant misfire? Or is it something you felt once idling?

 

[2013rammer]

just in park and outta gear just felt it after i pulled up back home never felt it while driving

 

[Rlaf75]

Like I said, changing spark plugs will never have a negative impact, except on your wallet. If it's intermittent then I'd wait a while and see if it gets worse which will make it a lot easier to diagnose the problem if there is one at all. If the truck runs fine and with your current mileage (65k I believe you said?) those plugs should have several thousand more miles to go. It could just be a fluke

 

[2013rammer]

yeah ill see how she idles in the morning if anything ill see if the dealer has any record of them changing them before and if so how long ago

 

[2013rammer]

they dont make any aftermarket coils for the newer hemi do they? i knew they did back in 04 and such wasnt for sure bout now

 

[Rlaf75]

they dont make any aftermarket coils for the newer hemi do they? i knew they did back in 04 and such wasnt for sure bout now

That I can't tell you. I would imagine someone makes aftermarket coils

 

[KarL45]

Just having an intermittent miss, I wouldn't suspect a coil at all. As for plugs, two things. If you are in the 60k range, your gap is no doubt getting wider. Concerning coil longevity, the farther a coil has to jump a spark the more KV's it will have to produce and will have an effect on it's life. Second, on plugs, am sure that having the plug in a head for many more miles will increase the likelihood of having difficulty in removing them. I probably will change mine around the 50k mark. That said, what brand plug is being preferred for replacement? OEM or other. Not even sure what oem is. Thinking Champion???

 

[BlownGP]

they dont make any aftermarket coils for the newer hemi do they? i knew they did back in 04 and such wasnt for sure bout now

You shouldn't need coils for a while. There pretty reliable.

I seemed to have a very very small miss at idle. Like sitting at a stop light.
I change my plugs this summer at 61K and I still feel the miss sometimes.

But my old plugs didn't look that bad and the gaps were all good. I bought the truck used with 33K so I dunno if they were changed before hand though.
I wouldn't worry about it unless it's more consistent and starts to feel really bad.

I would still change your plugs but I really think the 30K interval is almost too soon.

 

[2013rammer]

Sorry for late reply i went with what orielys said was oem was a autolite doubleplatnium and the side my converter was throwing a code on before i got the cats replaced looked bad some a Lil wet looking even these plugs prolly wasn't the best to get but I didn't wanna spend a tone of money on them and it not change nothing but it helped alot I'll change them again at 100k with a better plug