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Old 11-08-2016, 04:41 PM   #1
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Tick Tick Tick

Anyone tell me what the cold start tick is that is coming from underneath when I first start my truck? 2012 with a little over 105,000 miles.

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Old 11-08-2016, 04:46 PM   #2
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Usually the first step is to eliminate it being an exhaust Manifold leak. Broken bolts are not uncommon.
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Old 11-08-2016, 05:10 PM   #3
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Quote:
Originally Posted by Redtruck-VA View Post
Usually the first step is to eliminate it being an exhaust Manifold leak. Broken bolts are not uncommon.
Times 2. My '11 with 106k has that going on, I've confirmed broken bolts just haven't gotten around to fixing it yet. Headers and studs are the permanent fix. The factory manifolds warp.
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Old 11-08-2016, 05:42 PM   #4
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I take it that this is common on this truck. How do they break and why does the sound go away after about 30 seconds to a minute? Is this a really "serious" problem and if so what am I looking at to have it repaired?
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Old 11-08-2016, 08:11 PM   #5
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Quote:
Originally Posted by F.D.Jr. View Post
I take it that this is common on this truck. How do they break and why does the sound go away after about 30 seconds to a minute? Is this a really "serious" problem and if so what am I looking at to have it repaired?
The leak goes away as the metal heats up and expands it seals the leak off. The manifolds are a poor design as are the bolts. The dealer "fix" is to, depending on the severity of the warp, plane or replace the manifolds and replace the bolts with the same ones that broke. There's no upgraded parts from the dealer. I wouldn't know what it would cost for a dealer fix, I'm saving up for a set of headers and studs to fix mine.
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Old 11-11-2016, 08:13 PM   #6
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it cost me $800 to fix mine, and that was only one side! i hope it doesn't happen again.
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Old 11-12-2016, 03:36 AM   #7
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Wondering why if so many people are having the same problem with the same viechle, why hasn't Chrysler posted recall for this problem? Makes you think doesn't it.
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Old 11-12-2016, 04:11 AM   #8
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I suspect the core of the problem has to do with the manifolds being cast iron and the heads aluminum. If the bolts didn't break the manifold does. Different temperature expansion rates. I put headers on before anything broke years ago and have never had a problem. The headers most likely flex enough to eliminate the problem along with higher strength bolts. Manifolds are tricky to design and manufacture, there have been several makes of vehicles over the years with the problem.
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Old 11-12-2016, 07:32 AM   #9
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Dodge won't recall it because it's not safety related just annoying. The heat breaks the bolts with expansion and contraction kinda like bending a piece of metal till it eventually breaks in two. It's most likely an exhaust leak try and narrow it down to one side of the engine and this will get you on a track to finding it.
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Old 11-14-2016, 09:49 AM   #10
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so to make sure this doesn't happen again what part would someone need to upgrade (aftermarket) headers, manifold, etc..?
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