Help..Black water/condensation from tail pipe.
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Junior Member
Joined: Feb 2006
Posts: 77
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From: kentucky
Car: 91 rs
Engine: 3.1 v6
Transmission: 700r4
Help..Black water/condensation from tail pipe.
I have a 91 rs with a 3.1 158k .At start during warm-up I get black water dripping from tail pipe.... Car is all stock, what might cause this??
Joined: Sep 2005
Posts: 27,918
Likes: 2,448
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
what might cause this
The normal products of perfect combustion are water and carbon dioxide. During warm-up, combustion is less than perfect, so some of the carbon makes it out unburned.
So, there you go: water, which condenses into a liquid; and soot.
It is completely normal.
Once the engine warms up, combustion becomes more complete (no soot), and the water stays a vapor because the exhaust is no longer cold enough to condense it.
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