water drip from exhaust pipe and muffler


Asked by jb8099 Oct 03, 2018 at 11:22 AM about the 2015 Ford F-250 Super Duty Lariat Crew Cab LB 4WD

Question type: General

Is water dripping from an exhaust pipe and muffler common on a ford 6.2 V8?
This does not happen on my truck when it is up to temperature but does
happen on the first start after it has sit a while. Is there a weep hole in the
muffler for condensation to drip out of when the truck is started?

3 Answers


This is condensate from a cold engine. Combustion produces water and after the engine & exhaust system heat up, this condensate is turned to steam and flows out with the combustion exhaust.

2 people found this helpful.

Yes, this is perfectly normal for all engines even if most people don't notice. The combustion of fuels, both gasoline and diesel yields carbon dioxide (CO2) carbon monoxide (CO) and water (steam) mostly. On a cold engine that steam will condense to water and drip from the muffler weep hole and exhaust pipes. My Taurus will leave a puddle of water on the garage floor if left to idle five minutes. This is a sign of near perfect, clean combustion and it runs perfect too...fast and efficient.

3 people found this helpful.

Another piece of interesting trivia: I had a mechanic tell me that for every gallon of gasoline an engine burns, it will produce eight gallons of water. I believe that's true. The Hydrogen comes from the gasoline and the Oxygen comes from the atmosphere. Combining H + O make H20 or water.

1 people found this helpful.

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