how to find exhaust leak. - Club Lexus Forums

Log In 

how to find exhaust leak.

Reply
 
 
 
Thread Tools Search this Thread
Old 01-19-10, 07:59 AM   #1
cdeptula
Driver School Candidate
Thread Starter
 
Join Date: Jan 2010
Location: FL
Posts: 6
Post how to find exhaust leak.

about 6-8 months ago i found out that when i lent my friend my car that he had been a little more drunk than he led on and while he was driving on his way back he hit a curb,but like completely hit the curb and now i havean exhaust leak. it sounds like a beater civic and im starting to get sick of the sound and i want to fix it.

ive been told that he hit the curb in a fashion that it sounds like a hole was punched in my catalytic converter but i have no idea how to go about fixing it and as u all know lexus isn't cheap to bring it to them for them to fix it so im just wondering what suggestions you guys have? thanks in advance
cdeptula is offline   Reply With Quote
Old 01-19-10, 08:13 AM   #2
Lexmex
Super Moderator
 
Lexmex's Avatar
 
Join Date: Apr 2004
Location: Miami, Florida
Posts: 16,465
Default

Your literally going to have to turn on the vehicle and probe around underneath (or the length of the exhaust piping) and keeping your hand away a bit feel and warmth and listen for any leak (hissing). Depending on the severity of the hole, you might be able to seal it up with some sealant like Permatex (I think about every auto store has this stuff). It's also possible if you take it to an independent exhaust shop they could weld shut (assuming the leak is bigger) the hole. This really shouldn't take much $$$ at all, maybe at the most just a few minutes to seal.

Generally, the exhaust leaks occur near gaskets where two pieces are held together by bolts or near the front or rear of the catalytic converter or muffler (where the piping meets the cat or muffler).
Lexmex is offline   Reply With Quote
Old 01-19-10, 08:34 AM   #3
cdeptula
Driver School Candidate
Thread Starter
 
Join Date: Jan 2010
Location: FL
Posts: 6
Default

yea to be completely honest i think its close to the Cat / piping interface because its loudest around there plus that's about where my buddy said(from what he could remember) is where he ran over the bump. somehow in the center of the car

ive heard of a method of checking the exhaust by putting soap and water into the manifold and it bubbling out the hole but that seemed shady so i wanted to ask first.
cdeptula is offline   Reply With Quote
Old 01-19-10, 04:45 PM   #4
carguy07
Lexus Champion
 
carguy07's Avatar
 
Join Date: Nov 2005
Location: OH
Posts: 1,745
Default

"ive heard of a method of checking the exhaust by putting soap and water into the manifold and it bubbling out the hole but that seemed shady so i wanted to ask first."

Not only shady, but it won't work. I would look at the flex pipe first if nothing else is obvious. If you can hear it that much it will not be hard to find.
carguy07 is offline   Reply With Quote
Old 01-19-10, 06:36 PM   #5
salimshah
Moderator
 
Join Date: Apr 2001
Location: Austin, TX
Posts: 9,609
Default

Manifold No way. Gasoline engines have good compression (not as good as diesel) but introduce a non-compressible fluid instead of air and the result can be catastrophic.

With the exhaust cold, just feel the leak. You can even partially block the exhaust tip to create more pressure in the system [dont over do it as you can choke the engine and wet the spark plugs].

Salim
salimshah is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Exhaustaholic... 7milesout LS - 4th Gen (2007-present) 25 06-11-15 11:37 AM
Questions about a Big exhaust leak and Little Oil leak. And a box for my Air intake. Naughtlol Performance & Maintenance 0 02-20-15 01:27 AM
White smoke on start/acceleration CJG ES - 1st to 4th Gen (1990-2006) 18 12-22-13 05:51 PM
Humming Noise front and rear Pinnow ES - 1st to 4th Gen (1990-2006) 6 10-05-13 07:23 PM
Fix a IS 250 F sport rim Speedy07 IS - 2nd Gen (2006-2013) 10 02-27-12 10:49 PM


Tags
350, exauhst, exhaust, exhaust leak, find, gs, hole, hole in cat, howto, leak, leaks, lexus, loudest, sc400, seller

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -7. The time now is 03:39 PM.


Copyright © 2000-2016 Internet Brands, Inc. All Rights Reserved