[Supras] How do I locate an exhaust leak?

[Hacker J]

On my car the exhaust manifold bolts were all loose after 100k miles.  This seems to be common.
Unfortunately, it is also apparently common for the studs to strip out of the head if you
retighten them back to factory specs. I helicoiled them all when the head was rebuilt to avoid the
problem.

I would suggest checking the torque on the manifold bolts. You may find some are really loose.  I
would be cautious about torquing them back to 29ft-lbs though, unless you are prepared to helicoil
should something let go.

Jon


--- supras-request at supras.com wrote:
> >
> >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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