5.7 Hemi tick - 2012 GC Overland Summit - JeepForum.com
 
LinkBack Thread Tools
post #1 of 10 Old 08-15-2017, 01:43 PM Thread Starter
myriad360
Registered User
2008 WJ 
 
Join Date: Oct 2006
Location: Moscow, ID
Posts: 560
5.7 Hemi tick - 2012 GC Overland Summit

Seemed to get better for a bit after changing all 16 plugs ($$$), but I'm back to sounding like a '74 cattle truck. What's the cause, and has anyone found a fix? Lots of other hemi owners online with this complaint, but so far no solid cause or fixes.

https://youtu.be/1G_d6JJ4Yoc

https://youtu.be/_YdXTbQ59Ls


Great XJ Troubleshooting/mod sites list:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2001 Jeep Cherokee 4.0 L Limited, White. Bought in Grangeville, ID 06/11/08. Stock everything.
1998 Jeep Wrangle 4.0 L, Green. Bought in Nampa, ID 02/21/09
1988 Jeep Cherokee 4.0 L, White. Bought in Vancouver, WA in 2003. 1st Jeep, White. Bought with 3" lift, added Pacesetter header and 40 series Flowmaster

Last edited by myriad360; 08-15-2017 at 01:58 PM. Reason: Adding videos
myriad360 is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 08-15-2017, 02:18 PM Thread Starter
myriad360
Registered User
2008 WJ 
 
Join Date: Oct 2006
Location: Moscow, ID
Posts: 560
Hmm, might give this a try. Will report if it helps. http://www.**********.org/f107/hemi-...ner-47182.html

Great XJ Troubleshooting/mod sites list:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

2001 Jeep Cherokee 4.0 L Limited, White. Bought in Grangeville, ID 06/11/08. Stock everything.
1998 Jeep Wrangle 4.0 L, Green. Bought in Nampa, ID 02/21/09
1988 Jeep Cherokee 4.0 L, White. Bought in Vancouver, WA in 2003. 1st Jeep, White. Bought with 3" lift, added Pacesetter header and 40 series Flowmaster
myriad360 is offline  
post #3 of 10 Old 08-15-2017, 04:14 PM
ColdCase
My Reality Check Bounced
 
ColdCase's Avatar
2011 WK 
 
Join Date: Sep 2009
Location: New England
Posts: 9,975
Loose or broken exhaust manifold bolt or a cracked manifold is a common source of a Hemi ticking sound in a broad range of vehicles, just about everything they squeeze a V8 into from cars to trucks. Many mistake the exhaust leak for the hemi tick, but the exhaust leak is a commonly reported fix. Its not the classical valve train tick where there is no fix. Because of production variances one engine's tick may be louder than another.

Current: 2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6
Previous: 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
ColdCase is offline  
 
post #4 of 10 Old 08-16-2017, 10:35 AM
mx71
Registered User
2013 WK 
 
Join Date: Jan 2012
Location: Boise
Posts: 730
Check oil and exhaust manifold bolts.
mx71 is offline  
post #5 of 10 Old 08-16-2017, 04:13 PM
BolderGuy
Registered User
2013 WK 
 
Join Date: May 2012
Location: Camas
Posts: 111
Annoying thing is that they (exhaust leak vs Hemi tick) sound similar and both go away when the engine warms up. Can you smell exhaust coming out from under the jeep when you start it?

3rd GC. ZJ, WJ and now WK2. Decked out Limited with OME lift running 275/55/20s.
BolderGuy is offline  
post #6 of 10 Old 08-16-2017, 11:17 PM
HackFabrication
Registered User
 
HackFabrication's Avatar
1976 CJ5 
 
Join Date: Nov 2007
Location: Canton
Posts: 3,983
A lot of the 'ticking' sounds, especially at idle, is the nature of the direct injection. I had that noise in both my 2011 GC Overland and 2014 GC Summit. Surprisingly, my 2017 has very little noise. All three had/have the 5.7L Hemi.

"In the end...It's all Hack."
HackFabrication is offline  
post #7 of 10 Old 08-16-2017, 11:25 PM
azzkicker
Registered User
2007 WK 
 
Join Date: Dec 2016
Location: Beaverton
Posts: 568
My hemi makes an idle tick that I would call a lifter noise, or loose rocker arms. I've had it checked at the dealer, and they say it's normal.

I'm not sure I believe them, but I'm not too worried either because I have a warranty and I really wouldn't mind building a custom hemi anyway.

07 WK 5.7 QD2, 4" lift, 33X10" tires, M8000s
ARB twin air,Dual AGM group 49, sliders and skids
azzkicker is offline  
post #8 of 10 Old 08-17-2017, 06:03 AM
ColdCase
My Reality Check Bounced
 
ColdCase's Avatar
2011 WK 
 
Join Date: Sep 2009
Location: New England
Posts: 9,975
The V8's cam is high in the block making for awkward pushrod angles. Being high in the block, any valve train noise is heard louder than just about any other engine on the market (the noise has more of a direct path). So you have bad pushrod angles that have a tendency to make noise plus production variances and a more direct sound path that, when combined, make for ticking noises that you don't hear on other engines (the noise is there on other motors but it is harder to hear it). Its normal.

Current: 2011 Grand Cherokee Overland V8, 2009 Liberty Rocky Mt V6
Previous: 2000 Grand Cherokee Laredo I6, 1979 CJ7 I6 Quadratrac
ColdCase is offline  
post #9 of 10 Old 08-17-2017, 10:10 AM
WindyCity
Registered User
 
Join Date: Dec 2012
Location: Northbrook
Posts: 43
Mine has what I would call a normal tick for the hemi. I do run seafoam in the tank every once in a while and it will really help quiet down the tick for a couple thousand miles, but it always comes back. I am currently at 108k in my 11' hemi and it has been the same since day 1.
WindyCity is offline  
post #10 of 10 Old 08-18-2017, 05:20 PM
mike12806
Registered User
 
Join Date: Dec 2016
Posts: 24
Quote:
Originally Posted by HackFabrication View Post
A lot of the 'ticking' sounds, especially at idle, is the nature of the direct injection. I had that noise in both my 2011 GC Overland and 2014 GC Summit. Surprisingly, my 2017 has very little noise. All three had/have the 5.7L Hemi.


Hemi has port injection, not direct


Sent from my iPhone using Tapatalk
mike12806 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome