H20 from Exhaust

[Pwoon]

I have 2000 Tundra 4.7L and noticed some amount of H20 coming out from the exhaust pipe in the morning when I start the truck for a couple of minutes before driving.
Is this normal or how does H20 got into the truck?

 

[XS650]

quote:

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Originally posted by Pwoon:
I have 2000 Tundra 4.7L and noticed some amount of H20 coming out from the exhaust pipe in the morning when I start the truck for a couple of minutes before driving.
Is this normal or how does H20 got into the truck?

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You get more than a pound of water out your exhaust pipe for every pound of gasoline you burn. If your pipe is cold enough, it will come out in liquid form. A bit warmer it will give a bit of a cloud, warmer yet, you won't see it.

That's all assuming you don't have coolant leak or someone taking a leak up your exhaust pipe at night

 

[kenw]

water condenses overnight in ALL gasoline exhaust systems. Plus, as stated above, H2O is a natural byproduct of combustion.

 

[1 FMF]

water is a byproduct of combustion, but I think the water you see dripping out the tailpipe while driving down the road is more a result of the catalytic converter doing it's job of converting carbon monoxide and hydrocarbons (CO & HC) into water. Either way, water dripping out the tailpipe is normal.

 

[Matt_S]

As all these guys have already said, it's normal. That's also the reason why exhaust systems rot out faster if you mostly use the car for short trips. In those cases, the system never gets hot enough to evaporate all the water that condenses when you shut the engine off.

 

[mechtech]

Older Mopars were used for irrigation, when cold.