Jeep Cherokee Forum

Go Back   Jeep Cherokee Forum > Technical Discussion > OEM Cherokee Tech
Register Forgot Password?
Search


Welcome to Cherokee Forum!
Welcome to Cherokee Forum,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!


Reply
 
 
 
submit to reddit
 
Thread Tools Search this Thread Display Modes
Old 08-12-2010, 09:01 PM   #1
CF Veteran
 
phillyxj570's Avatar
 
Join Date: Mar 2010
Location: wilkes barre PA.
Posts: 1,200

View phillyxj570's Photo Album My Photos
96 Cherokee
Default engine ticking

when i start my jeep the engine makes a ticking noise while idling...as soon as i give it gas the ticking goes away...but if i come to a stop sign or red light the ticking comes back...until the engine warms up it sounds like it is coming from the front of the engine but i can not pin point it...any help or ideas is appreciated.
__________________
1996 Cherokee Classic 3" skyjacker and some random goodies
2000 Grand Cherokee Laredo bone stock DD
It's a Cherokee Thing, A Step Above It's a Jeep Thing
phillyxj570 is offline   Reply With Quote
Old 08-12-2010, 09:06 PM   #2
Junior Member
 
CHEVY SHOCKW4VE's Avatar
 
Join Date: Mar 2010
Posts: 43

View CHEVY SHOCKW4VE's Photo Album My Photos
Cherokee
Default

mines doing the same thing. i popped the hood and it sounds like its comin from the valve cover. idk if i have a lifter sticking or somehting at idle. hopefully someone can help
CHEVY SHOCKW4VE is offline   Reply With Quote
Old 08-12-2010, 10:43 PM   #3
Seasoned Member
 
Join Date: Jun 2010
Posts: 349

View 84zmyfavorite's Photo Album My Photos
Cherokee
Default

This is becoming more and more common, especially in the latter year 4.0s, I think because of the reduced levels of zinc/phospherous in 2004 year and later, "Energy Conserving"(5w-20, 0w-30, 5w-30, 10w-30) API SM rated motor oils. The later year 4.0s would most likely have been run on these newer oils most of their life vs. older engines that did get the better protection for flat tappet/camshaft engines like our beloved 4.0s. And 2.5s. But any year 4.0, from 87 to 06 can develop this problem, if driven aggresively on these lower level zinc/phospherous oils. The lower levels of ZDDP dosent offer the High shear protection needed in the camshaft lobe/ lifter contact area and wear occurs, with either the lobe rounding off, or the lifter wearing concave, or both, creating a gap between two when they should always be touching. That gap being made up as the camshaft lobe, when the lobe comes back into contact as the lifter is being rotated towards the lifter is what makes the "Tick, Tick".
84zmyfavorite is offline   Reply With Quote
Old 08-14-2010, 09:21 AM   #4
Junior Member
 
CHEVY SHOCKW4VE's Avatar
 
Join Date: Mar 2010
Posts: 43

View CHEVY SHOCKW4VE's Photo Album My Photos
Cherokee
Default

Quote:
Originally Posted by 84zmyfavorite View Post
This is becoming more and more common, especially in the latter year 4.0s, I think because of the reduced levels of zinc/phospherous in 2004 year and later, "Energy Conserving"(5w-20, 0w-30, 5w-30, 10w-30) API SM rated motor oils. The later year 4.0s would most likely have been run on these newer oils most of their life vs. older engines that did get the better protection for flat tappet/camshaft engines like our beloved 4.0s. And 2.5s. But any year 4.0, from 87 to 06 can develop this problem, if driven aggresively on these lower level zinc/phospherous oils. The lower levels of ZDDP dosent offer the High shear protection needed in the camshaft lobe/ lifter contact area and wear occurs, with either the lobe rounding off, or the lifter wearing concave, or both, creating a gap between two when they should always be touching. That gap being made up as the camshaft lobe, when the lobe comes back into contact as the lifter is being rotated towards the lifter is what makes the "Tick, Tick".
is their anyway to fix this ones it does it? or should you just rip the top end apart and replace it
CHEVY SHOCKW4VE is offline   Reply With Quote
Old 08-14-2010, 10:40 AM   #5
Senior Member
 
CodeXJ's Avatar
 
Join Date: Oct 2008
Location: Port Orange, FL
Posts: 871

View CodeXJ's Photo Album My Photos
1993, 1994 Cherokee
Default

Most people just let them tick. Usually the tick is due to collapsed lifters that aren't fully pumping up, resulting in some play in between the rockers and the pushrods. It's common in higher mileage engines, not just Jeeps in general. The fix is usually to put in new lifters or run a thicker oil. For example, mine sounds like a coffee can full of marbles on 10w30 but is quieter with 10w40. It could, however, also be other things like damaged valves. Usually, if the engine is running fine, people just run thicker oil and keep driving.
__________________
48hrs must pass before a person may be considered missing, longer if they own a Jeep.


1993 White 4-door. Bone stock 2wd, for now.
1994 Red 2-door. Parts rust bucket and 4wd donor.
2008 GSXR-750, black and orange, akrapovic shorty, 6k HID, CRG bar end mirrors, PUIG Windscreen.
CodeXJ is offline   Reply With Quote
Old 08-14-2010, 12:28 PM   #6
CF Veteran
 
djb383's Avatar
 
Join Date: Nov 2009
Location: The Republic of TEXAS
Posts: 7,560

View djb383's Photo Album My Photos
1998 Cherokee
Default

What in-line engine isn't noisy???? It's a characteristic nature of the beast. The lifters and cam are on the side of the block (noise is easily transmitted) vs being buried deep inside the block as with a V type block. Ticking/clicking is normal for most in-line engines. The Jeep 4.0L only has 55 lbs closed spring pressure.....no extra ZDDP required there.
djb383 is offline   Reply With Quote
Old 08-14-2010, 04:17 PM   #7
Junior Member
 
CHEVY SHOCKW4VE's Avatar
 
Join Date: Mar 2010
Posts: 43

View CHEVY SHOCKW4VE's Photo Album My Photos
Cherokee
Default

Quote:
Originally Posted by djb383 View Post
What in-line engine isn't noisy???? It's a characteristic nature of the beast. The lifters and cam are on the side of the block (noise is easily transmitted) vs being buried deep inside the block as with a V type block. Ticking/clicking is normal for most in-line engines. The Jeep 4.0L only has 55 lbs closed spring pressure.....no extra ZDDP required there.
never thought of it that way. my xj is my first car so im used to inline 6's
CHEVY SHOCKW4VE is offline   Reply With Quote
Old 08-14-2010, 04:17 PM
 
 
 
submit to reddit
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Ticking in 4.7 Engine jimd4x4 Grand Cherokee Tech 16 03-22-2014 12:02 AM
what is this & why is it ticking? builtnotbought89' Grand Cherokee Tech 6 01-31-2010 05:58 PM
XJ 4.0 i6 Ticking! syncview OEM Cherokee Tech 19 11-10-2009 10:25 PM
ticking sound jeepster11 OEM Cherokee Tech 5 02-10-2009 11:45 AM
ticking sound prerunner1982 OEM Cherokee Tech 20 01-30-2009 10:04 AM

Go Back   Jeep Cherokee Forum > Technical Discussion > OEM Cherokee Tech



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not 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 Off
Refbacks are Off



All times are GMT -5. The time now is 05:17 AM.


This site is in no way affiliated with Jeep or Chrysler.

Emails Backup