Water from tail pipes? - Mustang Evolution

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Old 03-27-2013, 05:17 PM   #1
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Water from tail pipes?

My gt spits out water from the tail pipes on start up during fast idle. I've noticed it since I first bought the car but it's more water than I've ever seen come out of tailpipes. My exhaust is all stock minus the Roush axlebacks. It runs fine and actually had a pcm update at the dealership today.

Is this normal? Btw the temp is in the 30s here. I just remember hearing water from tailpipes is a bad thing years ago.
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Old 03-27-2013, 05:59 PM   #2
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Quote:
Originally Posted by 2013fiveO View Post
My gt spits out water from the tail pipes on start up during fast idle. I've noticed it since I first bought the car but it's more water than I've ever seen come out of tailpipes. My exhaust is all stock minus the Roush axlebacks. It runs fine and actually had a pcm update at the dealership today.

Is this normal? Btw the temp is in the 30s here. I just remember hearing water from tailpipes is a bad thing years ago.
its the roush I think. Their design seems to cause them to condense and build up water. If you like at them the outter shell surrounds an inner pipe that doesn't extend all the way out so that outter shell can hold water and water can get in there. I traded mine to another guy on here for springs and I literally took mine off the car, put them in the garage, then boxed them up and shipped them too him and he said they had water in them. He said he drilled holes in them to allow them to drain all the time.

Seems to be an issue with roush's design.
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Old 03-27-2013, 06:09 PM   #3
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Flowmaster too
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Old 03-27-2013, 06:44 PM   #4
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My gt500's do it too
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Old 03-27-2013, 06:47 PM   #5
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Gasoline is made up of carbon and hydrogen. When you burn it, it combines with oxygen to form carbon dioxide and water. In the combustion chamber, that water is a gas (steam). If the exhaust system is cold, some of the water will condense to form liquid water, and that's what you see coming from the exhaust.
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Old 03-27-2013, 08:14 PM   #6
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Old 03-27-2013, 09:22 PM   #7
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There are holes drilled in the bottom of the muffler on my Bullitt. I've heard that they are there to drain the water that accumulates, pretty much, every time you shut it off. The pipes and muffler are very warm as opposed to the cold air outside. This causes condensation inside of the exhaust system. The colder and moister the air is, the more condensation will collect. Like a cold glass of iced tea on a hot summer day. Same thing only backwards. Or you might have a blown headgasket. Lol. Hope not.
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Old 03-27-2013, 09:31 PM   #8
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I hate to tell you this but I think the muffler fairy is peeing in you tail pipe.
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Old 03-28-2013, 04:14 AM   #9
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lol awesome thanks for the input everyone.
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