Black deposits ejected out of exhaust
Thread Starter
Senior Member
Joined: May 2012
Posts: 582
Likes: 1
From: Woodstock, IL
Car: 1984 Trans Am Recaro Edition
Engine: 355 L98 Vortec 226/234 custom cam
Transmission: TKO-600
Axle/Gears: On borrowed time...
Black deposits ejected out of exhaust
Attachment 253145
Here are some pics...
Just started the car after about a month... But this has happened before..
Black oily like deposits shoot out of the exhaust ...
Is this a sign of a leaky exhaust manifold gasket or some other gasket thingy somewhere ?
Chuck

Here are some pics...
Just started the car after about a month... But this has happened before..
Black oily like deposits shoot out of the exhaust ...
Is this a sign of a leaky exhaust manifold gasket or some other gasket thingy somewhere ?

Chuck
Joined: Oct 2001
Posts: 12,219
Likes: 1,141
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Black deposits ejected out of exhaust
Its a lil rich, a lil condensation, a lil oil and maybe some small exhaust parts of exhaust rust.
On Probation


Joined: Apr 2007
Posts: 1,592
Likes: 18
From: Syracuse NY
Car: 84 Z-28
Engine: 305 HO
Transmission: r-700
Axle/Gears: 3:73
Re: Black deposits ejected out of exhaust
Thats common......................
Its just carbon/exaust staining mixed with condensation inside your exaust pipes
esp. on a older car till its fully warmed up to operating temp. and burned off.
I see it on my old Z or GTO on initial cold starts.
Now if it does it after the car is hot and up to temp along with smoke I
would be concerned and investigate further.
Its just carbon/exaust staining mixed with condensation inside your exaust pipes
esp. on a older car till its fully warmed up to operating temp. and burned off.
I see it on my old Z or GTO on initial cold starts.
Now if it does it after the car is hot and up to temp along with smoke I
would be concerned and investigate further.
Thread Starter
Senior Member
Joined: May 2012
Posts: 582
Likes: 1
From: Woodstock, IL
Car: 1984 Trans Am Recaro Edition
Engine: 355 L98 Vortec 226/234 custom cam
Transmission: TKO-600
Axle/Gears: On borrowed time...
Re: Black deposits ejected out of exhaust
Thanks!!
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