Stinky Exhaust
Thread Starter
Heel & Toe
Joined: Nov 2002
Posts: 24
Likes: 0
From: Fort Lauderdale FL
Stinky Exhaust
I have a 71 convertible with stock 350 4spd. I find that after running the car my passenger and I smell like exhaust. I have had the engine tunned and the carb rebuilt.
My father in law thinks the mufflers are rotted inside from age. I know it doesn't have cats, but I have had alot of other muscle cars without cats and I don't smell like an exhaust pipe after driving it.
Any help??? :auto:
My father in law thinks the mufflers are rotted inside from age. I know it doesn't have cats, but I have had alot of other muscle cars without cats and I don't smell like an exhaust pipe after driving it.
Any help??? :auto:
Burning Brakes
Joined: Aug 2000
Posts: 1,211
Likes: 6
Re: Stinky Exhaust (KSullender)
Sounds like it's running very rich and/or check for an exhaust leaks at the manifold to pipe connection on back until you are sure it's not leaking. Best method is to put it on a lift and have someone rev it up and down to listen for the noise that a leak will indicate (kind of a popping sound on de-celleration). Worked for me.
Regards, Mark
Regards, Mark
Melting Slicks
Joined: Apr 2002
Posts: 2,103
Likes: 0
From: Tucson AZ
Re: Stinky Exhaust (marky mark)
Had a similar problem. Car was too lean. Upped the jet size, smell went away. Had the car too rich at one opoint and the car smelled more like raw fuel when I shut her off.
If the mix is too lean, you tend to get more hydrocarbons released. That is the heavy exhaust smell that hangs in the air and on your clothes. If you smell like 'gas vapors', the mix is too rich.
[Modified by Robert N, 11:08 AM 9/16/2003]
[Modified by Robert N, 1:00 PM 9/16/2003]
If the mix is too lean, you tend to get more hydrocarbons released. That is the heavy exhaust smell that hangs in the air and on your clothes. If you smell like 'gas vapors', the mix is too rich.
[Modified by Robert N, 11:08 AM 9/16/2003]
[Modified by Robert N, 1:00 PM 9/16/2003]
Thread Starter
Heel & Toe
Joined: Nov 2002
Posts: 24
Likes: 0
From: Fort Lauderdale FL
Re: Stinky Exhaust (KSullender)
The exhaust is welded all the way back, and both shift boots have been replaced with new ones. Carb has been rebuilt and adjust by a carb shop.
Also, the car never came with emissions devices.
Also, the car never came with emissions devices.
Thread Starter
Heel & Toe
Joined: Nov 2002
Posts: 24
Likes: 0
From: Fort Lauderdale FL
Re: Stinky Exhaust (Robert N)
Where can I get new jets? Do you know what size would be correct for this application? Wouldn't it be jetted too lean if it smelled like exhaust?
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Melting Slicks
Joined: Apr 2002
Posts: 2,103
Likes: 0
From: Tucson AZ
Re: Stinky Exhaust (KSullender)
Since you have (should if stock) a Rochester carb, I will be of no help. Since a shop recently tuned it, see if they can run the car to test for emissions (assuming that have a machine to do so). That should verify the problem. Then adjustment of the carb would be next.
Pro
Joined: May 2001
Posts: 608
Likes: 0
Re: Stinky Exhaust (Robert N)
Do you get headaches??
Be VERY wary of carbon monoxide--the silent killer.
I had an '81 camaro in high school, and once had a bent tailpipe route exhaust into the trunk through a hole in the plastic bumper. Myself and three friends almost went to the emergency room after a 5 hour road trip!!!!
Man WHAT A HEADACHE I HAD from the CO poisoning!!!!
Get it taken care of!
Be VERY wary of carbon monoxide--the silent killer.
I had an '81 camaro in high school, and once had a bent tailpipe route exhaust into the trunk through a hole in the plastic bumper. Myself and three friends almost went to the emergency room after a 5 hour road trip!!!!
Man WHAT A HEADACHE I HAD from the CO poisoning!!!!
Get it taken care of!
