Loud tapping sound - JeepForum.com

 
LinkBack Thread Tools
post #1 of 10 Old 05-13-2002, 01:47 PM Thread Starter
A.S.
Registered User
 
Join Date: Apr 2002
Location: British Columbia/Canada
Posts: 59
Loud tapping sound

Sometimes I hear a loud tapping sound from the front of the engine around the belt assombly and fan. It happens in the mornings just when I turn the car on. It lasts for a few minutes untill the car warms up and it goes away or becomes very faint. What could it be?


1990 2.5L YJ,4"lift,32"tires
A.S. is offline  
Sponsored Links
Advertisement
 
post #2 of 10 Old 05-13-2002, 01:58 PM
geepYJ95
Registered User
 
Join Date: Nov 2001
Location: Michigan
Posts: 92
Maybe the fan is hitting the cowl.....when the engine just starts up maybe it is a little cold and vibrates.......

Green Jeep Club Member #14

'95 YJ Sahara Edition, green w/ tan hard and soft tops, Flowmaster 40 series, New cat, 2 10"eclipse subs, pioneer cd deck, and Xtant A series 6001 amp.
geepYJ95 is offline  
post #3 of 10 Old 05-13-2002, 02:00 PM
sk8pr0
Registered User
 
Join Date: Jun 2001
Location: Illinois
Posts: 47
does it speed up if you press the gas and RPM increases?

if it does then I would say it is the lifters not a big issue just annoying.

Red 93 YJ
30/9.5" tires
Lift and Lock soon (just need the $)
sk8pr0 is offline  
post #4 of 10 Old 05-13-2002, 11:03 PM Thread Starter
A.S.
Registered User
 
Join Date: Apr 2002
Location: British Columbia/Canada
Posts: 59
yah, it speeds up when I gass. Its always there, its just way louder when I just turn the car on.

1990 2.5L YJ,4"lift,32"tires
A.S. is offline  
post #5 of 10 Old 05-14-2002, 07:10 AM
johny1i
Registered User
 
johny1i's Avatar
 
Join Date: Mar 2002
Location: Crestview, Florida
Posts: 782
Mine is a case of a tapping lifter, and it is exactly as you described. Mine is the #5 cylinder and it has done that intermittently (but always when cold) for the 80,000 miles that I've owned the jeep. Doesn't get worse, and in fact it seems to have gotten better over the years. Get ready to pull apart the engine to fix it, though, if that's what it is--I'm going to wait until full rebuild time for that, though.

Currently an '86 CJ-7 and a '77 CJ-7 Golden Eagle---#4 and 5 following a '01 Sahara, '90 Sahara, and '85 CJ-7....
johny1i is offline  
post #6 of 10 Old 05-14-2002, 08:05 AM
PoorFool
Registered User
1999 TJ Wrangler 
 
Join Date: Mar 2002
Location: Kansas City, MO
Posts: 472
It's most likely lifter tapping. It really isn't an issue. If you don't like it, try going to a heavier weight oil. Check your manufacturers recommendations and bump it up one weight. Don't go over 10w-40 though. That tends to quiet up older engines as it will fill the gaps created by wear.

HTH

Turbocharged 4.0, 35" Kevlars, 33 spline Detroit D44, 4.88s, heavy foot.

www.kcjeepclub.org
PoorFool is offline  
post #7 of 10 Old 05-14-2002, 12:41 PM
4wheeler4CJ
Registered User
 
4wheeler4CJ's Avatar
 
Join Date: Mar 2002
Location: Southern Rhode Island
Posts: 1,527
If you have 100,000 miles or more, you can safely run 20W-50. I run it in all my vehicles when they reach 100,000, regardless of engine size or vehicle. I've never blown and engine all these years, they run well past 200,000-250,000 before I evben think about selling them. <img border="0" title="" alt="[Wink]" src="wink.gif" />
4wheeler4CJ is offline  
post #8 of 10 Old 05-14-2002, 07:22 PM
FLHT_FXRS_YJ
Registered User
 
FLHT_FXRS_YJ's Avatar
 
Join Date: Mar 2001
Location: Michigan
Posts: 471
Don't run junk oil filters!!!!!! This can be a major cause of premature engine failure and the ticking you hear at startup is an indication something is going wrong with lubrication,

89' YJ - 4.2 - NV4500 - NP231w/sye - 1" Body Lift - 2 1/2" Rancho Suspension Lift - 31" Firestone MTR - AR Outlaw II - Tomken Bumpers F & R - Warn 8000 front - Warn 6000 rec. mount rear - FlowFit Seats - Tom Woods Rear & Custom 2" front driveshafts
FLHT_FXRS_YJ is offline  
post #9 of 10 Old 05-14-2002, 08:20 PM
PoorFool
Registered User
1999 TJ Wrangler 
 
Join Date: Mar 2002
Location: Kansas City, MO
Posts: 472
FLHT is right about the oil filters.

To each his own regarding the 20W-50 though. I've never tried it, but have always heard that newer engines (yours is teetering on new/old line) have such close tolerances, that too heavy of oil can hurt them. Also, they don't over-buld them much, so the ancillary equipment may not handle the extra force/pressure created by heavier oils. I'd check with a mechanic you trust.

HTH

Turbocharged 4.0, 35" Kevlars, 33 spline Detroit D44, 4.88s, heavy foot.

www.kcjeepclub.org
PoorFool is offline  
post #10 of 10 Old 05-15-2002, 09:39 AM
4wheeler4CJ
Registered User
 
4wheeler4CJ's Avatar
 
Join Date: Mar 2002
Location: Southern Rhode Island
Posts: 1,527
Yeh, that is why I don't use 20W-50 until 100,000 miles. By that time, there is plenty of wear internally. Until then, I use 10W-40. I would personally never use 5W or 0W, might as well use tap-water.

As far as filters, I would NOT use FRAM. I blew internal diaphrams 3 times in a row until I switched brands. When the internal diaphram blows, your oil pressure goes to 0. The diaphram helps hold the oil under pressure, without it, the oil won't flow where it needs to. A friend of mine worked as an engineer for Fram, and left ebcause of quality control problems. Since then, I don't trust them, never will. I have used AC, Purolator, STP, all with success now.
4wheeler4CJ 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



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Engine Tapping sound... olblue02 TJ Wrangler Technical Forum 18 01-27-2010 09:12 PM
92 4.0 tapping sound while cold Backpoints YJ Wrangler Technical Forum 3 12-23-2009 08:07 AM
tapping sound when braking Brooklyn Jeep TJ Wrangler Technical Forum 5 12-11-2008 06:32 PM
Ticking/Tapping Sound SimplesUD TJ Wrangler Technical Forum 4 07-03-2007 09:11 AM
Tapping sound when first cranked panamatj2003 TJ Wrangler Technical Forum 9 05-13-2007 04:49 PM

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