top end still noisy after new lifters and oil pump - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 10-30-2013, 02:54 PM   #1
Jeeper
 
randy111's Avatar
 
Join Date: Apr 2013
Location: Kiamichi
Posts: 52
top end still noisy after new lifters and oil pump

Mechanic said the brackets that hold rockers were bent? I do not understand why he would not replace them or even let me know. Could this be the source of top end noise? What are these brackets called, and where's the best place to get them? I will put these on myself, as long as there are no special skills involved. Thank you, Randy

__________________
Creeps don't drive Jeeps!
JEEP, the original 4x4
randy111 is offline   Quote Quick Reply
Old 10-30-2013, 03:54 PM   #2
Jeeper
 
c5wagner's Avatar
 
Join Date: Apr 2013
Location: Reno, Nevada
Posts: 1,436
First things first, Engine, year, and what kind of top end noise? Usually the lifters are the main culprit in noise, but the rockers, valves, or brackets can make a very precise different noises. Also, I've had friends who add seafoam, marvel mystery oil, or an oil stabilizer like bars engine repair with good results. Just know if your engine is very sludgy, you might have to tear it down if the sludge is removed by the seafoam and etc...

__________________
1989 Base YJ, 4.2l, Borla exhaust, offy intake, Motorcraft 2150 carb, CRT HEI ignition, ax15, np231 JB conversions SYE, D30 ARB & Ford 8.8 ARB 4.56, 35x12.5r15 Goodyear MTR's, bds 3.5" springs, 1" body lift, and 1/2" Boom Shackles.
Build Thread: http://www.wranglerforum.com/f330/fi...ld-385106.html
c5wagner is offline   Quote Quick Reply
Old 10-30-2013, 04:21 PM   #3
Jeeper
 
randy111's Avatar
 
Join Date: Apr 2013
Location: Kiamichi
Posts: 52
oops, sorry. 91 4cyl 140K miles, there is no "miss" and I get about 20MPG, mech said the top end had some sludge. oil pressure gage tops out, but will bounce at idle.
__________________
Creeps don't drive Jeeps!
JEEP, the original 4x4
randy111 is offline   Quote Quick Reply
Old 10-30-2013, 04:38 PM   #4
Founder, ThumbJeeps

WF Supporting Member
 
sevenservices's Avatar
 
Join Date: Sep 2009
Location: Mid-Michigan/Thumb
Posts: 3,952
have you added any oil thickeners such as lucas? and do you run anything thicker than a 5w-20? If so, the oil is not getting to the top of the engine fast enough for the hungry lifters.

Not saying nothing is loose, just saying you'll want to run the thinner oil to decrease the chatter. Most people think right out of the gate that oil treatements will help, when in turn they make it worse by thickening the oil to a point where the pump won't move it fast enough to the top end.
__________________
-Chris
Founder, ThumbJeeps


1994 Wrangler YJ I6 4.0 H/O Auto 3 spd. 4" RC (33x12.5) (15x8) 3:54 Gears
sevenservices is offline   Quote Quick Reply
Old 10-30-2013, 04:58 PM   #5
Jeeper
 
randy111's Avatar
 
Join Date: Apr 2013
Location: Kiamichi
Posts: 52
currently 10w30, should be plenty thin.
__________________
Creeps don't drive Jeeps!
JEEP, the original 4x4
randy111 is offline   Quote Quick Reply
Old 10-30-2013, 09:30 PM   #6
Jeeper
 
c5wagner's Avatar
 
Join Date: Apr 2013
Location: Reno, Nevada
Posts: 1,436
You should add some lucas oil stabilizer, that stuff works wonders in these old engines.
__________________
1989 Base YJ, 4.2l, Borla exhaust, offy intake, Motorcraft 2150 carb, CRT HEI ignition, ax15, np231 JB conversions SYE, D30 ARB & Ford 8.8 ARB 4.56, 35x12.5r15 Goodyear MTR's, bds 3.5" springs, 1" body lift, and 1/2" Boom Shackles.
Build Thread: http://www.wranglerforum.com/f330/fi...ld-385106.html
c5wagner is offline   Quote Quick Reply
Old 10-31-2013, 04:40 PM   #7
Jeeper
 
Join Date: Jan 2013
Posts: 212
Did you do the work or did the mechanic? Whoever did it the push rods should have been put back in, in the same spot. You need to keep track of them when removed and put them back in the same spot. A loose or deformed rocker bracket may be the cause of the noise. Pull the valve cover and see what they look like. Keep us posted.
__________________
1991 YJ 4.0L, K&N air filter, SS headers, 31X10.5, Congo Cage, etc...
CMike357 is offline   Quote Quick Reply
Old 10-31-2013, 08:42 PM   #8
Moderator

::WF Moderator::
 
harleydragon's Avatar
 
Join Date: Jul 2012
Location: south georgia
Posts: 3,908
could be due to cam and/or rocker wear too
harleydragon is offline   Quote Quick Reply
Old 11-01-2013, 05:05 PM   #9
Jeeper
 
Join Date: Jan 2010
Location: Las Cruces, NM
Posts: 2,291
When the lifter s were replaced should have done whole job and replaced rockers and pushrods...not that much more $$
__________________
2013 WRANGLER SPORT 2 DR., V-6 ,AUTO,HARD TOP
(Sold)1994 Jeep Wrangler 2.5L, Bestop top
/w steel half door and slider windows
5 speed, 2.5" lift, 31" tires,rack lights
Garyk is offline   Quote Quick Reply
Old 12-30-2013, 10:49 AM   #10
Jeeper
 
randy111's Avatar
 
Join Date: Apr 2013
Location: Kiamichi
Posts: 52
just ordered rockers, bridges and pushrods.

I am going to try to reuse the "new" v/c gasket. Do I just tighten the rockers down, or is there an adjustment necessary?


Thank you
__________________
Creeps don't drive Jeeps!
JEEP, the original 4x4
randy111 is offline   Quote Quick Reply
Old 12-30-2013, 11:24 AM   #11
Jeeper
 
Join Date: Jan 2010
Location: Las Cruces, NM
Posts: 2,291
There is a specific torque, can't recall what it was though, haynes manual should have the spec.

__________________
2013 WRANGLER SPORT 2 DR., V-6 ,AUTO,HARD TOP
(Sold)1994 Jeep Wrangler 2.5L, Bestop top
/w steel half door and slider windows
5 speed, 2.5" lift, 31" tires,rack lights
Garyk is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum 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 email address for yourself.
Email Address:

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.



Thread Tools

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 Off
Refbacks are Off




Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 06:32 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC