Spark plug replacement

[4S50]

Yep, the plugs that came out of my engine were Champion RER8ZWYPB4

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[ShadowsPapa]

So my opinion on spark plugs is use what works for you. I have never had a problem with OE plugs on any Chrysler products that I have owned, but I have seen defective OE plugs in these Upgraded Pentastar engines in the past year.

Yup - 2021 with 3.6 - misfire at about 800 miles.
It was the spark plugs.
Anything can be defective. And each engine has a personality.

I also remember a racer running a '62 Dodge Dart with the 413 Ramcharger engine who switched from Champions to NGK plugs and dropped his et substantially.

SOMETIMES plugs aren't an exact cross-over. "Heat ranges" can vary between makers.
I've had some real fun going through all of my books on spark plugs, cross references and such and one example was crossing plug X over to brand Y then taking the number of that brand Y and crossing it over to plug X in another list in that book and it ended up a different heat range.
It was fun.
X = Y but Y != X

I've had decent luck. I have typically stuck with Champion in my Jeep engines (running the original type Champion in my SX4's 4.0) but ran Autolite in my 70 Javelin 390 before I sold it and cleared up some odd deposits. (Those originally came with Champion)

Sometimes, cross-overs, cross-references aren't perfect. I've seen where a person moved from one brand to another, had bad luck, then switched to a hotter range in the replacement plugs and things ended up fine. Wasn't the BRAND, it was the fact the heat range wasn't an exact match.

 

[cb4017]

SPs are such a pain the ass now to do. Time consuming. I remember it was so quick and easy on my dads ’68 mustang. In fact my dad had me doing them when I was an about 12 since it was so easy on those cars. There are things I miss on old engines.

Me too. Probably the worst I've done were a 98 F-150 with the 4.6L V-8. I was sincerely hating Ford engineers at that time. And which one decided 4 aluminum threads was enough to hold the plugs?? Fixing a blown plug was a thrill too.

Easiest, for obvious reasons, was the Ford flathead engine I had in HS.

 

[ShadowsPapa]

And which one decided 4 aluminum threads was enough to hold the plugs?? Fixing a blown plug was a thrill too.

It must have been common, - at least based on this logic -> as I recall, Ford actually had the tools and a procedure written up for such repairs - unless I am remembering incorrectly.

 

[Erievon]

Me too. Probably the worst I've done were a 98 F-150 with the 4.6L V-8. I was sincerely hating Ford engineers at that time. And which one decided 4 aluminum threads was enough to hold the plugs?? Fixing a blown plug was a thrill too.

Easiest, for obvious reasons, was the Ford flathead engine I had in HS.

Ford learns from it's mistakes. The 05 F150 with 5.4 3 Valve...You couldn't get the plugs out of those engines, they held so well the plug would break half the time trying to get it out.

 

[cb4017]

It must have been common, - at least based on this logic -> as I recall, Ford actually had the tools and a procedure written up for such repairs - unless I am remembering incorrectly.

You may be correct. Here is the kit I bought to fix it. Darn near $400 at the time. I'm hanging on to it until wife will let me get rid of the truck. Guess I can't complain too much. It has almost 250,000 miles on it and is still running good. When the truck is gone I'm selling the kit. Used one time, LOL. (so far)

 

[4S50]

what prompted you to replace your PCV valve?

It is listed as being due for replacement at 100k in the owners manual.

 

[Hootbro]

It is listed as being due for replacement at 100k in the owners manual.

You actually got factual information from reading the owners manual? What kind of sorcery is this?

 

[Gren71]

It is listed as being due for replacement at 100k in the owners manual.

Ty. I wasn’t sure if there was a symptom or event that lead to it, not just simply the miles.

Ill have to call my shop and have them add it to the list for my
Upcoming service i suppose.

Unless its super easy to do in the driveway. My schedule is awful at the moment.

 

[ShadowsPapa]

You actually got factual information from reading the owners manual? What kind of sorcery is this?

He must be a middle aged or older fellow - he can read.

 

[Salmanilla]

Is there a way to test coil packs? I have 100K miles on my 2020 Rubi. Gas Mileage has gone to hell the last few months. I figure its time for new plugs, but Considering what a PITA it is to work on, thought I might as well do Coil Packs and wires at the same time.

 

[Charles 236]

In my experience, 3.6 coils rarely fail. But the same can't be said for the boots on the coils. Unfortunately, Mopar so far hasn't seen fit to sell the boots without the coils. Given the cost of coils, I would not change them out if there wasn't a misfire on that particular cylinder. Another option is to just change out the three coils under the upper intake manifold.

 

[ShadowsPapa]

If the drop started in fall blame fuel and colder air.
Maybe run some injector cleaner.
Bad or weak coils will usually trigger a misfire.

 

[Lunentucker]

Anyone tried these?
https://rippmods.myshopify.com/coll...-jl-gladiator-3-6-high-performance-coil-packs

 

[ShadowsPapa]

They've been mentioned in these forums.......along with problems.
Only oem for me. They are more than hot enough.

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