Notices
GT Performance Mods 2005+ Mustang GT Performance and Technical Information

Help diagnosing possible Exhaust Leak

Old 6/12/07, 09:00 PM
  #1  
Mach 1 Member
Thread Starter
 
jedikd's Avatar
 
Join Date: August 7, 2004
Location: Socal
Posts: 723
Likes: 0
Received 0 Likes on 0 Posts
Help diagnosing possible Exhaust Leak

Installed MAC axle-back today on my 07 GT. I noticed that there was not a slot on the axle-back for the rounded alignment tab on the axle-back pipes, so I only pushed on the exhaust as far as that alignment tab, clamped it down well and i thought it felt pretty solid. Running the car I notice that there seems to be a loss in HP, possibly a hissing (air leaking?) sound in the back, and the exhaust coming out of the mufflers is quite hot/has a distinct odor. Does this sound like an exhaust leak to everyone? Is my best bet to try and cut off that alignment tab so I can try and slide the mufflers onto the pipe farther? Any other tips/ideas for diagnosing and treating the problem would be appreciated.
jedikd is offline  
Old 6/13/07, 03:49 PM
  #2  
Shelby GT500 Member
 
blkstang06's Avatar
 
Join Date: October 9, 2006
Location: It's tough in the jungle !
Posts: 2,751
Likes: 0
Received 1 Like on 1 Post
Originally Posted by jedikd View Post
Installed MAC axle-back today on my 07 GT. I noticed that there was not a slot on the axle-back for the rounded alignment tab on the axle-back pipes, so I only pushed on the exhaust as far as that alignment tab, clamped it down well and i thought it felt pretty solid. Running the car I notice that there seems to be a loss in HP, possibly a hissing (air leaking?) sound in the back, and the exhaust coming out of the mufflers is quite hot/has a distinct odor. Does this sound like an exhaust leak to everyone? Is my best bet to try and cut off that alignment tab so I can try and slide the mufflers onto the pipe farther? Any other tips/ideas for diagnosing and treating the problem would be appreciated.
Get rid of that alignment pin ! Grind or file it off, this will help.......
blkstang06 is offline  
Old 6/13/07, 03:59 PM
  #3  
Team Mustang Source
 
theedge67's Avatar
 
Join Date: July 4, 2006
Location: St. Louis Area
Posts: 2,872
Likes: 0
Received 0 Likes on 0 Posts
The hot exhaust and strange odor will not have anything to do with axlebacks. Exhaust is normally hot, and the odor might be the new mufflers breaking in/curing.
theedge67 is offline  
Old 6/13/07, 04:08 PM
  #4  
Mustang Fanatic
 
70MACH1OWNER's Avatar
 
Join Date: January 9, 2005
Location: New Carlisle, Ohio (20 miles north of Dayton)
Posts: 6,982
Likes: 0
Received 6 Likes on 6 Posts
I agree with STD. Get rid of the pin and push the muffler on as far as you can. Exhausts are hot...that is normal. The smell is coming from oils and lubicants used during the manufacturing process. They will be gone in a couple of days after they burn off.
Scott
70MACH1OWNER is offline  
Old 6/13/07, 08:19 PM
  #5  
Mach 1 Member
Thread Starter
 
jedikd's Avatar
 
Join Date: August 7, 2004
Location: Socal
Posts: 723
Likes: 0
Received 0 Likes on 0 Posts
what'd you guys use to get rid of the alignment pin? I have a file but it seems like it would take a long time giving how the difficulty of filing upside down with a pipe that has some flex in it
jedikd is offline  
Old 6/13/07, 11:19 PM
  #6  
Member
 
Join Date: March 13, 2007
Posts: 11
Likes: 0
Received 0 Likes on 0 Posts
4" Metabo grinder with cut off wheel
boss 302 is offline  
Old 6/14/07, 10:13 AM
  #7  
Mustang Fanatic
 
70MACH1OWNER's Avatar
 
Join Date: January 9, 2005
Location: New Carlisle, Ohio (20 miles north of Dayton)
Posts: 6,982
Likes: 0
Received 6 Likes on 6 Posts
Originally Posted by jedikd View Post
what'd you guys use to get rid of the alignment pin? I have a file but it seems like it would take a long time giving how the difficulty of filing upside down with a pipe that has some flex in it

Your stock mufflers have a slot in them that allows the pin to align them. Some after market mufflers do not have this slot and the pin gets in the way of pushing the new muffler on all the way. So you can slot the new muffler for the pin or remove the pin. Your choice. Easier to remove the pin.
Scott
70MACH1OWNER is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Gill5oh
2010-2014 Mustang
15
10/6/17 10:50 PM
09-gt/cs
GT Performance Mods
9
10/15/15 10:03 AM
JonathonK
General Mustang Chat
0
9/28/15 04:04 PM
samjluck
5.0L GT Modifications
7
9/17/15 10:24 PM


Thread Tools
Search this Thread
Quick Reply: Help diagnosing possible Exhaust Leak


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.