Engine loud, lots of power lost, exhaust leak? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ 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 08-11-2013, 07:08 PM   #1
Jeeper
 
Alohadreamer82's Avatar
 
Join Date: Nov 2012
Posts: 23
Engine loud, lots of power lost, exhaust leak?

Aloha

I own a 2002 wrangler 4 cyl automatic. It has recently got louder, I seem to have less power, seems to run a little rough. Any ideas? I have only had a jeep since November and don't know what to do, but want to fix it myself. I am thinking it is an exhaust leak somewhere by the engine as that is where the loudness comes from. I don't see anything lose, but I don't know if I'm checking everything. A little love would be great. Thank you ahead of time

Alohadreamer82 is offline   Quote Quick Reply
Old 08-11-2013, 07:58 PM   #2
Jeeper
 
FloridaJeepers's Avatar
 
Join Date: Jul 2013
Location: Niceville, Fl
Posts: 335
Cracked exhaust manifold?

FloridaJeepers is offline   Quote Quick Reply
Old 08-11-2013, 08:24 PM   #3
Jeeper
 
Alohadreamer82's Avatar
 
Join Date: Nov 2012
Posts: 23
How could I find the crack in the manifold, and what happens ifi don't fix it right away
Alohadreamer82 is offline   Quote Quick Reply
Old 08-12-2013, 01:21 PM   #4
Jeeper
 
FloridaJeepers's Avatar
 
Join Date: Jul 2013
Location: Niceville, Fl
Posts: 335
Look for a crack in it or get a stethoscope and put it around it and where it gets louder thats where the crack is. Or i believe you can buy this stuff that you put in and it smokes where there is a crack
FloridaJeepers is offline   Quote Quick Reply
Old 08-17-2013, 07:36 PM   #5
Jeeper
 
Alohadreamer82's Avatar
 
Join Date: Nov 2012
Posts: 23
Still can't find it but I think I need to replace the manifold. Should I do it myself? Is it easy to do, or should I pay someone else?
Alohadreamer82 is offline   Quote Quick Reply
Old 08-18-2013, 04:22 PM   #6
Jeeper
 
ReconJack's Avatar
 
Join Date: Apr 2013
Location: Va Beach
Posts: 73
Work your way forward from the tail pipe, check all parts of the exhaust for looseness and cracks (muffler, cat, downpipe) however given that a cracked exhaust manifold is a common issue with these engines (I had a crack in my old 4cyl YJ), that is probably your culprit. Replacing an exhaust manifold isn't difficult if you take your time, have the right tools, and SPRAY THE BOLTS DOWN WITH PB BLAST REAL GOOD for about a day first. A flex head 3/8 ratchet helps to get in those hard to reach places, but with a 4cyl you should have a lot of room to work around. There's plenty of write ups online and this forum, a new manifold runs about 100, don't waste your time trying to weld the old one or get a used one, not worth the trouble if it turns out to be a dud. and don't JB weld your manifold either, this is one of those rare times when redneckness won't work well.
ReconJack is offline   Quote Quick Reply
Old 11-03-2013, 04:37 PM   #7
Jeeper
 
Alohadreamer82's Avatar
 
Join Date: Nov 2012
Posts: 23
I am having trouble. And I can't find a good write up for a 4 cyl. I bought the new manifold and I am taking things apart and trying to label everything. Do I really need to disconnect the fuel rail, or can I just push it aside. Should I buy all new bolts? Anyone know of a good you tube video or have a link for a good write up and hopefully with pictures

Alohadreamer82 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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




» Featured Product

All times are GMT -5. The time now is 09:58 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