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Discussion Starter · #1 ·
A couple months back I brought my 2018 JK into the dealership for engine noise. They diagnosed it and replaced all 24 rockers and lifters. There was still some chatter from the engine but they determined it was from the fuel injectors and said it was normal. The noise seems to have gotten worse, or maybe I'm just focused in on it and paranoid now. Does this just sound like injector noise?

 

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They SAID they did replaced 24 rockers. Please understand that what they say they did and what they really did is not always the same.

Regardless, this is NOT an injector noise. This is CLEARLY a valve train noise. See my above line about how much their word or opinion counts. ZERO.

Our 2017 is whisper quiet. Running on 5W30 from early on when we bought it new.
 

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Discussion Starter · #3 ·
Well I’m giving them benefit of the doubt that they replaced what they said they replaced. Whether or not that’s what was wrong with the engine is another question. Maybe I’ll ride it out for a little while and see if it gets worse.
 

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If it is still under warranty take it to another dealer and see what they have to say about it.
 

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It is hard to tell from the video. A certain amount of noise can be considered normal. However if you feel it is getting worse go to another dealer. Unfortunately what they said they did and what they actually did can be two completely different stories. I don't trust dealerships, working for them, and having them attempt to screw me has tainted my opinion about them. This goes back several decades. Unless I actually saw them do the work, or there was some vast long term improvement in a situation like this I would always have doubt.

I would suggest trying a good synthetic 5W30 oil and see if it improves. I run Pennzoil Ultra 5W30 in mine and the engine is quiet.
 

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A couple months back I brought my 2018 JK into the dealership for engine noise. They diagnosed it and replaced all 24 rockers and lifters. There was still some chatter from the engine but they determined it was from the fuel injectors and said it was normal. The noise seems to have gotten worse, or maybe I'm just focused in on it and paranoid now. Does this just sound like injector noise?

https://youtu.be/zUM4qegAXA8
Hello tc_howe,

Are you thinking you'd like to get a second opinion? Send us a direct message as we'd be glad to help with that process.

Jasmine
Jeep Social Care Specialist
 

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No. Not injectors. Injectors are a "clicking" sound and if you want to hear them, lift the engine cover off and it will be obvious. Hell, that's primarily why it's there, to mask the injector and transient valvetrain noise.
 

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Sounds like valve train noise to me
 

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Discussion Starter · #11 ·
My bad, ended up having to wait a couple weeks for the appointment and forgot to post a follow up. The second dealership also said the noise was normal. Jeep Cares was very helpful throughout the whole process. The ticking is still louder than I’d like it to be, so next oil change I’m gonna try Pennzoil Platinum 5W30.
 

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Good choice on oil and weight. I use the PP Ultra 5W30, and mine is also very quiet. So is my Grand-sons 2016 JKUHR..same oil and weight.
 

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Mine also makes some noise from the right wheel well. They replaced a rocker and can on the left bank though which surprised me. Still sounds the same and they say it’s normal injector noise. Only really hear it once warmed up to operating temperature. Here’s mine.


 

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Discussion Starter · #14 ·
Mine also makes some noise from the right wheel well. They replaced a rocker and can on the left bank though which surprised me. Still sounds the same and they say it’s normal injector noise. Only really hear it once warmed up to operating temperature. Here’s mine.


https://youtu.be/lVLJq5yCm7c


Yeah, mine is the same as yours. On cold start everything sounds fine, then the ticking appears once the engine is at operating temp, which is why I’m thinking switching to a good 5W30 oil may help quiet down some of the chatter.
 

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Yeah, mine is the same as yours. On cold start everything sounds fine, then the ticking appears once the engine is at operating temp, which is why I’m thinking switching to a good 5W30 oil may help quiet down some of the chatter.


I switched to 5W30 a few oil changes ago. Unfortunately I didn’t notice any difference. I took it back twice and they didn’t think it rockers. Hopefully they’re right. They swear up and down they inspected both banks when the only found the #4 exhaust rocker worn and the cam to it. I questioned it because the valve cover gaskets didn’t look new. But the advisor showed me pics of the old ones so I guess.
 

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How many miles on these Jeeps with the ticking?
 

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Just hit 17k miles the other day. Initial Star Bulletin repair was done at about 14,400 miles though.
What's the Star Bulletin repair?
 

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It's hard to really compare volume levels with reality vs videos, but I have somewhat similar ticking on my 2017 with 17k miles. Mine isn't so loud that you can hear it from the cabin, but it's definitely noticeable when you stand outside next to the front. It's also been doing it for a while, I don't remember when I first noticed it but it was closer to 10k miles, and could've been there from day one and maybe I just wasn't paying attention.


I asked the dealer about it when I was in for an oil change last time, they said they compared it to another Wrangler and it sounded the same and was normal fuel injector / lifter noise. I didn't press them to show this side by side comparison to me in person, as I had left the vehicle there and picked it up later. I guess since mine isn't what I'd consider glaringly loud and I've got plenty of warranty left, I'm just kind of sitting on it and watching out for it getting worse. I should probably head over to the off road park and compare it to a bunch of other Wranglers in person to get a better feel for what's normal and what's not.
 

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It's hard to really compare volume levels with reality vs videos, but I have somewhat similar ticking on my 2017 with 17k miles. Mine isn't so loud that you can hear it from the cabin, but it's definitely noticeable when you stand outside next to the front. It's also been doing it for a while, I don't remember when I first noticed it but it was closer to 10k miles, and could've been there from day one and maybe I just wasn't paying attention.


I asked the dealer about it when I was in for an oil change last time, they said they compared it to another Wrangler and it sounded the same and was normal fuel injector / lifter noise. I didn't press them to show this side by side comparison to me in person, as I had left the vehicle there and picked it up later. I guess since mine isn't what I'd consider glaringly loud and I've got plenty of warranty left, I'm just kind of sitting on it and watching out for it getting worse. I should probably head over to the off road park and compare it to a bunch of other Wranglers in person to get a better feel for what's normal and what's not.


Pretty much this. Can only hear it standing by the right front wheel. I bought it at 26k and it just turned 49k. It’s done it the whole time I’ve had it I believe. All warranties expired in May. Runs good, no CELs knock on wood.
 
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