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Old 07-04-2018, 12:52 PM
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2012 3.6 ticking

I've got a 2012 3.6 with 85k on it and it's got a tick. Pretty sure it's the rocker arms after doing some research... but I also noticed that jeep extended the warranty to 10 years 150k on the left head for this engine. This jeep is new to me, does that warranty follow the car? If so, should I just go right to a dealer to have them look it over?

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Old 07-04-2018, 09:56 PM   #2
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I've got a 2012 3.6 with 85k on it and it's got a tick. Pretty sure it's the rocker arms after doing some research... but I also noticed that jeep extended the warranty to 10 years 150k on the left head for this engine. This jeep is new to me, does that warranty follow the car? If so, should I just go right to a dealer to have them look it over?
Yes... go to the dealer and have them look at it. Might have to pay the Diagnosis 150$ fee for them to look at it. once diagnosed, if the dealer gives you the BS its not covered, call corporate and explain the problem. They should call the dealer and tell them its covered.

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Old 07-24-2018, 08:31 PM
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So I was doing a little more research before I drop cash and valuable time at the dealer. My jeep has the AC heads (stamped: 3302B 00670 013000 on my head) so I think I'm good to just replace the rocker arms by myself (unless someone convinces me otherwise). Is there anything else I should look at or swap out while I'm doing this work?
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Old 07-24-2018, 08:59 PM   #4
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So I was doing a little more research before I drop cash and valuable time at the dealer. My jeep has the AC heads (stamped: 3302B 00670 013000 on my head) so I think I'm good to just replace the rocker arms by myself (unless someone convinces me otherwise). Is there anything else I should look at or swap out while I'm doing this work?
The vehicle has the extended warranty since it is a 2012. What happens if you change the rocker arms and come to find it is still ticking because it is a bad valve guide or something else? If you do the work yourself and don't fix the problem and then bring it to the dealer you could possibly jeopardize the warranty extension on the head and valve train. I'm a DIY'er but in this instance I'd let the dealer sort it out, if it is covered under an extended warranty. If I had to pay out of pocket it would be a different story.
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Old 07-24-2018, 09:18 PM
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I've read a few threads where the dealer won't even touch it unless it's throwing a #2 misfire code. The way I see it is if I already have the most recent revisions of the heads, which from my reading don't have problems, then I don't see the harm in swapping out the rocker arms myself. Its not like chrysler would know I did anyways.
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Old 07-25-2018, 08:56 AM   #6
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I've read a few threads where the dealer won't even touch it unless it's throwing a #2 misfire code. The way I see it is if I already have the most recent revisions of the heads, which from my reading don't have problems, then I don't see the harm in swapping out the rocker arms myself. Its not like chrysler would know I did anyways.
That’s incorrect. I had the rocker arm tick just like you with no code. The dealer replaced the arms and cams only to find out the head was bad as well once they reassembled everything it threw the code. The bad arms kept the cylinder head code from coming up. The head was then replaced under warranty. FYI I had the latest head revision as well. Be smart and take it to the dealer it is covered. The rocker arm replacement was not covered however
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Old 07-25-2018, 10:22 AM
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Thanks Monte. How did the dealer handle that? Sounds like you had to have them perform service in order for them to realize the heads were bad. In other words, it sounds like you had them replace the the rocker arms and then whooops, the heads were bad. Shouldn't that all be covered if the heads were the problem? How did it go down in a little more detail? Because I will go apesh*t at the guy at the dealer if he wants to charge me anything
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Old 07-26-2018, 11:18 AM   #8
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Thanks Monte. How did the dealer handle that? Sounds like you had to have them perform service in order for them to realize the heads were bad. In other words, it sounds like you had them replace the the rocker arms and then whooops, the heads were bad. Shouldn't that all be covered if the heads were the problem? How did it go down in a little more detail? Because I will go apesh*t at the guy at the dealer if he wants to charge me anything
Back in October of 2014 with 40k miles I brought my 2012 to the dealer for the cylinder misfire code. I did not hear ticking coming from the engine just the engine light and the code. They diagnosed the defective cylinder head and replaced under warranty with the most recent head. All was good until this past November with 115k miles I started to get a tick from the engine. It sounded like a bad rocker arm. Dealer confirmed the wear in the cylinder was from worn rocker arm bearings which damaged the cams as well. I was out of warranty so had to pay for those repairs. After they put it back together and fired it up they got the misfire code from the cylinder. They replaced the cylinder under the extended 150k mile warranty. Its running fine 10k miles later. I asked them why they didn't just replace the cylinder head with all the rockers, cams and lifters to begin with and they told me because there was no way to know it was defective unless it through the code. It doesn't matter to me because I would have needed to pay for those worn parts out of warranty anyway. The cylinder head repair was under warranty. FYI the tick you are hearing may very well be a worn rocker arm bearing. When those bearings go they have a tendency to damage the cam. Replacing the rocker arm is easy. The cam not so much and is not a job I would attempt personally
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Old 07-26-2018, 11:21 AM   #9
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one more thing your vehicle is under 100k so all those components I had to pay for like the rockers, cams and lifters in head should be covered under warranty so I defiantly wouldn't do the job yourself
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Old 07-26-2018, 11:27 AM
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How much they charge your for the rocker arms?


Cause from what I learned from your experience is it's likely much cheaper to replace the rocker arm myself. Then it might throw a code which is something I will need for the dealer to even consider looking at the heads. The rocker arm repair is only about $25-30 in parts and a couple hours of fairly simple labor

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