Fix your Engine Tick before it gets expensive (3.6L Pentastar tick)
- Thread starter jorgelrod
- Start date
RESURECTIONJK
Hooked
I’m going back in time to use what you’ve just taught us
mattfl
New member
lol yeah, I actually noticed a sudden loss of MPG about 3 months ago, but it was right after I regeared so I figured that was the issue, even though my friend who regeared at the same time improved his MPG. Shortly after the ticking started!
So yeah, if you notice a sudden loss of MPG, something is probably up!
Snboarder113
Hooked
I don’t know the 3.6 well, it states that the rocker roller bearings went bad and damaged camshafts but there’s no bearings in the parts list. Just rocker arm and cams. Are they a part of the rocker then?
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Snboarder113
Hooked
Duplicate post
trailraider
Active Member
this is a tough one, FCA will bounce claims back to the dealer if they figure parts didn't need to be replaced. if the tech doesn't write a good story, charge back. and you wont see it for three months after the fact. that's why you will see some dealers do the minimum required parts.
Cousin Clyde
Hooked
Any advice on how to approach the dealership about this? I’m the second owner of the Jeep and my purchase came with a 100K Powertrain warranty. I’m at 38K miles now so should be ok?
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Primo82
Caught the Bug
If you're hearing ticking/knocking you should take it in and ask them to check your valve lash.
I adjusted the valve lash on my motorcycle last winter, not because it was knocking but it was due to be checked and I found most of them were out. It's a pretty simple job IMO, but if your warranted make your dealer do it!
Edit 1: If the engine has 38k miles on it I wouldn't think it would have valve lash issues but it could I guess.
Edit 2: Also, cold engines will knock a little sometimes. If it's knocking when it's warm that is a problem.
Last edited:
Cousin Clyde
Hooked
Thanks man. Appreciate the info. Whenever I turn her over for the first time that day, it sounds like someone is banging two of these little metal balls together very rapidly for about three seconds after she starts.
Then the tick is much quieter and at about half the beats per minute, but definitely constant.
And yea your probably right, I should take it in. I guess I’m just fishing for DIY vs take it into the dealer experiences. Sounds like one guy on this thread had a great dealership experience with this issue down in Florida. Maybe I’ll make the drive down haha.
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A.J.
Active Member
I’ve heard the best way to fix the 3.6 engine tick is a V8 swap. 
*
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Bierpower
Hooked
jdofmemi
Active Member
I’ve heard the best way to fix the 3.6 engine tick is a V8 swap.
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Good answer
Primo82
Caught the Bug
One or two valves could be way out of tolerance and if so they should balance them all. From what you describe, I'd ask them to check valve clearances.
I'm not sure how accessible the valves are in these engines, haven't looked. It would probably be easy enough for you to check on your own. But if it has warranty I'd do it under warranty.
Primo82
Caught the Bug
I’ve heard the best way to fix the 3.6 engine tick is a V8 swap.
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Good answer
Or these guys may be on to something!
2nd.gunman
Caught the Bug
The valve clearance isn’t adjustable in the 3.6 it’s hydraulic. If it’s ticking all the time then you probably have a collapsed lifter and if left will damage the cam. It happened to mine at roughly 35k kms. New cams and lifters under warranty and no problem since.
However if it only ticks for a few seconds on startup as it builds pressure that is more likely the chain tensioner bleeding down after sitting and getting a bit of slack until you start again and the pressure comes back up. This is common on a lot of engines including the 3.6 and not really a big deal.
I’d suggest you take it to the dealer
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Cousin Clyde
Hooked
I’ve heard the best way to fix the 3.6 engine tick is a V8 swap.
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Take it to the dealer...take it to Exodus Jeeps[emoji848]
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Primo82
Caught the Bug
Well there i go for assuming again. Thank you for the knowledge. Need to look something up!
sipafz
Caught the Bug
Chain tensioner bleed down? Are the tensioners on this engine hydraulic? I’m only familiar with the spring loaded ratcheting type that only move in the direction to eliminate slack.