[Supras] Fw: How do I locate an exhaust leak?

[b2nice84 at aol.com]

It may not be the manifold at all if you have an EGR valve.? 

I had the same problem and it turned out to be the gasket for the diverter cover for the EGR valve.

This diverter?cover is on the back side of the head (between the head and firewall) that diverts exhust gases from the head into the EGR valve.? I think there are at least 8 bolts.? Make sure all the bolts are on tight or maybe the gasket is bad.? 

BTW it is hard to get to the bolts.? Just gotta take your time and hope you are double jointed.

Hope this helps
Brandon




-----Original Message-----
From: Khalid Almufti <kalmufti at yahoo.com>
To: Supras at supras.com
Sent: Thu, 17 Apr 2008 1:13 pm
Subject: [Supras] Fw: How do I locate an exhaust leak?



Ooops, forgot to cc the group.
(pls see my reply below, thanks).

----- Forwarded Message ----
From: Khalid Almufti <kalmufti at yahoo.com>
To: studioartist at yahoo.com
Sent: Thursday, April 17, 2008 4:11:14 PM
Subject: RE:How do I locate an exhaust leak?

? 
Hi!
    When I ran into this problem it turned out to be a leak around the exhaust 
manifold gasket, which was actually due to the exhaust studs threads stripping 
in the cylinder head (you should have all of them heliCoiled).  Even if an 
exhaust stud is heliCoiled into the head, the nuts need to be retorqued 
occasionally, but do so on a cold engine (trust me on this one).  So my advise 
is to check the nuts on the exhaust manifold (90% it's the one on the rear most 
location that will be loose, start there).
 
Good luck,
Khalid, 90T
 
 
 
At 09:12 AM 4/16/2008, you wrote:
>Message: 9
>Date: Wed, 16 Apr 2008 03:06:26 -0700 (PDT)
>From: LN <studioartist at yahoo.com>
>Subject: [Supras] How do I locate an exhaust leak?
>To: supras at supras.com
>Message-ID: <58623.3731.qm at web30405.mail.mud.yahoo.com>
>Content-Type: text/plain; charset=iso-8859-1
>
>I have an exhaust leaking sound in the engine
>compartment area but can't tell where it is
>originating from exactly.  I took it to the local
>Midas shop and they say it's the exhaust manifold
>which cracked.  Afterward back at home I took the 2
>heat shields off the exhaust  manifold but could not
>see any cracks ( at least visible to the naked eye)
>usingboth a flashlight and mirror to see the back
>side.  Can someone suggest a way to locate the exact
>position for a leak??  Maybe it's in the down pipe?
>How about using soap solution or will that won't work
>due to the high heat ?





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