3.6 Engine Tick

[WK2JT]

So they are tearing down the top end to diagnose.

Sponsored

 

[WK2JT]

Well, add me to the list… passenger side intake cam for the win, Pat.

 

[ShadowsPapa]

Well, add me to the list… passenger side intake cam for the win, Pat.

What model year is your JT? Did I miss where you said that? (it's not in your profile on the left)

If it's a 2020, it's usually the right or passenger side (US vehicle) that fails.
In other words, the odd numbered bank.

 

[WK2JT]

What model year is your JT? Did I miss where you said that? (it's not in your profile on the left)

If it's a 2020, it's usually the right or passenger side (US vehicle) that fails.
In other words, the odd numbered bank.

Yup, 2020. Now I just hope I’m good. I caught it before any CEL. It was running amazing and then 2 weeks ago I noticed it down on top end power. I rolled down the window and thought, “oh ? Batman!”

Planning on doing a couple do 500 miles oil/filter changes once I get it back.

oh, and start saving my pennies for a hemi swap.

 

[ecidiego]

Can you legally do it where you're from? Man I wish in Cali. You can do it to a 3.6 Wrangler but not a Gladiator.

 

[WK2JT]

Can you legally do it where you're from? Man I wish in Cali. You can do it to a 3.6 Wrangler but not a Gladiator.

Still researching it here for the front range, but it looks like it. From what I’ve read so far the engine/emissions equipment has to be equivalent or be better/newer than what came on the vehicle. I’m planning on stopping by the emissions center to chat with them.

 

[ShadowsPapa]

Still researching it here for the front range, but it looks like it. From what I’ve read so far the engine/emissions equipment has to be equivalent or be better/newer than what came on the vehicle. I’m planning on stopping by the emissions center to chat with them.

That's my understanding - some places say "only if it was available that way" while others say "as long as it meets or beats the prior emissions specs".

 

[Minty JL]

Can you legally do it where you're from? Man I wish in Cali. You can do it to a 3.6 Wrangler but not a Gladiator.

Well there you officially have a reason to leave Cali; enjoy freedom, less taxes and swap your JTM with the money you save in taxes LOL

 

[WK2JT]

So has there been a determination as to why the passenger side intake cam is getting trashed in the ‘20’s? I’ve seen a lot of opinions, but don’t think I’ve seen a root cause. Wrong lash adjusters, missed hardening step on the cams, etc?

 

[ShadowsPapa]

So has there been a determination as to why the passenger side intake cam is getting trashed in the ‘20’s? I’ve seen a lot of opinions, but don’t think I’ve seen a root cause. Wrong lash adjusters, missed hardening step on the cams, etc?

I wish we knew. I'd have to look/research or ask Benny if the part number for the lash adjusters has changed from 2019 to say 2022 or 2023.
They can't be interchanged - exhaust and intake are different sizes and won't fit.
Were the exhaust followers/rockers changed? That would be interesting as well. The exhaust lash adjusters, through the rockers, spray the oil onto the cams and followers so an oiling issue with the exhaust lash adjusters or followers could mean not enough oiling????

 

[WK2JT]

I wish we knew. I'd have to look/research or ask Benny if the part number for the lash adjusters has changed from 2019 to say 2022 or 2023.
They can't be interchanged - exhaust and intake are different sizes and won't fit.
Were the exhaust followers/rockers changed? That would be interesting as well. The exhaust lash adjusters, through the rockers, spray the oil onto the cams and followers so an oiling issue with the exhaust lash adjusters or followers could mean not enough oiling????

I’m still out of town so I haven’t picked it up yet and don’t have the paperwork. I’ll let you know. The SA said intake cam, rockers, and lifters. I didn’t want to get into the semantics game with him about lash adjusters, but curious what the work order will say.

 

[Hootbro]

So has there been a determination as to why the passenger side intake cam is getting trashed in the ‘20’s? I’ve seen a lot of opinions, but don’t think I’ve seen a root cause. Wrong lash adjusters, missed hardening step on the cams, etc?

I doubt a true root cause analysis document would ever get down to the dealership or customer level.

I think there has been more than one source of the problem spread out amongst design, part construction and assembly error.

 

[jav_eee]

So has there been a determination as to why the passenger side intake cam is getting trashed in the ‘20’s? I’ve seen a lot of opinions, but don’t think I’ve seen a root cause. Wrong lash adjusters, missed hardening step on the cams, etc?

It's waiting for the "change oil soon light" to pop up before you change the oil.

KIDDING!

 

[ShadowsPapa]

I doubt a true root cause analysis document would ever get down to the dealership or customer level.

I think there has been more than one source of the problem spread out amongst design, part construction and assembly error.

Exactly.

The root cause will stay with engineering, likely STAR won't have everything but what engineering tells them.

And the source of the issue, there are some causes more common than others, but I'd bet on at least 3 causes of all of the PUG intake cam issues, even if you pick on only 2020 model year.
It's why I really have to laugh at that law suit lumping 2011 through 2020 all together. They have no idea, no clue, and are just tossing stuff at the wall hoping something will stick with a clueless judge.

I didn’t want to get into the semantics game with him about lash adjusters, but curious what the work order will say.

No use "correcting" them (customer debating with "tech" generally doesn't go well).
I've found STAR documents that seem to interchange the terms. They could loop it back around and say "well, a 1975 SBC lifter was also a lash adjuster" and then it becomes - 'whatever'.
At least the followers do rock, the fulcrum is on the end instead of near the center.
As long as they communicate properly with each other and the parts department, get the correct parts ordered and replaced.

Note they correctly say "follower" but then use both terms for the lash adjuster - the wrong one first and then explain next paragraph.

 

[WK2JT]

Here's the parts list

Sponsored