Bad smelling exhaust...


  #1  
Old 02-03-07, 02:02 PM
Codyy's Avatar
Member
Thread Starter
Join Date: May 2006
Location: Canada
Posts: 454
Upvotes: 0
Received 0 Upvotes on 0 Posts
Bad smelling exhaust...

We have a 1990 Dodge Caravan and the exhaust is foul. Not in color, but in smell. It does not smell like regular exhaust at all - I can't describe the smell, but it's like it's burning something it shouldn't be. It is known to burn oil, but that sort of stopped after adding a Stop Smoke additive. Since it has been known to burn oil and the additive is in the oil, could it be burning that instead, causing a bad smell? Could it be related to Ethanol blended gas that is used in this vehicle sometimes?

Thanks for any ideas!
 
  #2  
Old 02-03-07, 03:08 PM
HotxxxxxxxOKC's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jul 2006
Location: USA
Posts: 7,754
Upvotes: 0
Received 1 Upvote on 1 Post
Stop using ethenol which gets way worse gas mileage then regular gas. See if the smell disappears.

Does it smell like rotten eggs?
 
  #3  
Old 02-03-07, 04:11 PM
Codyy's Avatar
Member
Thread Starter
Join Date: May 2006
Location: Canada
Posts: 454
Upvotes: 0
Received 0 Upvotes on 0 Posts
It's not rotten eggs, it's something else.. it's really hard to describe. Just like it's burning/exhausting something other than regular gas exhaust.
 
  #4  
Old 02-03-07, 04:22 PM
HotxxxxxxxOKC's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jul 2006
Location: USA
Posts: 7,754
Upvotes: 0
Received 1 Upvote on 1 Post
You might be burning excess oil. How have your oil levels been?

Try running a tank or two of regular gas, and see if it goes away.
 
  #5  
Old 02-03-07, 04:27 PM
Codyy's Avatar
Member
Thread Starter
Join Date: May 2006
Location: Canada
Posts: 454
Upvotes: 0
Received 0 Upvotes on 0 Posts
Oil burning hasn't been bad since we put in this Stop Smoke stuff. See I was wondering if the Stop Smoke stuff helped the seals and is slowly leaching into the cylinders instead of oil, and the van is burning that?
 
  #6  
Old 02-04-07, 11:10 AM
G
Member
Join Date: Oct 2002
Location: Hamilton County, Ohio
Posts: 3,927
Upvotes: 0
Received 2 Upvotes on 2 Posts
In many parts of the U.S. the gas contains up to 10% Ethanol. It's posted on the pumps. Does the exhaust smell like rotton eggs? That could be a sign of a failing catalytic converter.
 
  #7  
Old 02-04-07, 11:19 AM
HotxxxxxxxOKC's Avatar
Banned. Rule And/Or Policy Violation
Join Date: Jul 2006
Location: USA
Posts: 7,754
Upvotes: 0
Received 1 Upvote on 1 Post
No egg smell like I asker them earlier in the post.
 
  #8  
Old 02-04-07, 12:11 PM
G
Member
Join Date: Jun 2006
Location: United States
Posts: 2,296
Upvotes: 0
Received 31 Upvotes on 29 Posts
If you still have the Stop Smoke container put a few drops in a spoon and hold it over a burner on your stove to see if it gives off the same smell as it evaporates, it could be whatever is in Stop Smoke creating the odor. Have a nice one. Geo
 
  #9  
Old 02-04-07, 06:46 PM
M
Member
Join Date: Nov 2006
Location: Jersey
Posts: 491
Upvotes: 0
Received 0 Upvotes on 0 Posts
Could be your catalytic converter burning up. Are you running extra rich.
Also check the timing. if it is retarded it can do this.
I had an 87 same problem.
Is it the Mitsubishi motor ? and what size ?
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: