Advice needed 4.0l -
LinkBack Thread Tools
post #1 of 5 Old 08-18-2013, 06:57 AM Thread Starter
Registered User
1998 ZJ 
Join Date: Jul 2013
Location: Springfield
Posts: 15
Advice needed 4.0l

Have a 98 ZJ, 170,000 miles with noisy lifters. Are they adjustable? Any tips or recommendations? Thanks.

zjseeker is offline  
Sponsored Links
post #2 of 5 Old 08-18-2013, 09:43 AM
Registered User
Join Date: Aug 2013
Posts: 4
I have had three I6 motors with noisy lifters when the engine is cold. I, personally, think that's the way that motor runs.

I would say that if the noise goes away on acceleration, you're probably good.

Also, something that helped me was to use Castrol High Mileage 20W-50. It's heavier than what you normally use, but it helps the oil stick a bit better. Also, I do believe what they say about it reconditioning seals. While it won't fix your rear main seal drip, it will probably slow it down.
tahoe9813 is offline  
post #3 of 5 Old 08-19-2013, 12:13 PM Thread Starter
Registered User
1998 ZJ 
Join Date: Jul 2013
Location: Springfield
Posts: 15
Thanks to Tahoe

Thanks for the reply. Did some more searching into the topic and found info on Seafoam and other lubricants.
zjseeker is offline  
post #4 of 5 Old 08-20-2013, 01:35 AM
Registered User
2007 WK 
Join Date: Feb 2008
Location: Louisiana/Texas
Posts: 5,092
If mine didnt sound like a diesel when it is warming up, I'd think something was wrong with it. My 95 and this 97 both have the same sound and I bought them both brand new.

2007 5.7 Hemi, Ltd. QD II -
1997 ZJ, 4,0 select trac, Up country, track lok.
Oldfrog is offline  
post #5 of 5 Old 08-20-2013, 02:57 AM
Registered User
Join Date: Jul 2013
Posts: 55
I add a quart of Lucas when I change oil and it helps.
2xCross is offline  

Quick Reply

Register Now

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

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


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

Email Address:


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