Moisture Leak
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Joined: Nov 2006
Posts: 193
From: Dearborn,MI
Moisture Leak
I have a little moisture leaking from my Jet Hot y-pipe to my Magnaflow. My Z has been sitting in my garage the most of the winter. When I start it I get a little black moisture leak. Where does that come from? Is it because I haven`t drove it in a very long time?
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Joined: Mar 2005
Posts: 12,312
From: Aurora, IL
Its normal for carbon deposits to build up in the exhaust. Also, it is natural for condenstation or moisture to come out of the tailpipes as it is a harmless byproduct of the combustion process. Those two things mixed together make that black liquid you are seeing, nothing to worry about.
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Joined: Jan 2005
Posts: 2,592
From: N Falmouth MA
ORY or Catted Y? Cats = normal for moisture. It's part of the catylist conversion. IT basically creates water. c2o + hydrocarbons create water in the long run.
Even a small degree of moisture is normal for an ORY.
Even a small degree of moisture is normal for an ORY.
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Joined: Nov 1998
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From: Hell was full so they sent me to NJ
Just to clarify... gasoline is made up of hydrogen and carbon. The normal combustion process combines O2 and the hydrogen to make water and O2 and carbon to make CO2. Doesn't have anything to do with the catalytic converter, other than a tiny amount of extra oxidation of unburned HC's in the cat. You will notice condensed water dripping out of the exhaust of virtually any gasoline engine, particularly on cold start.
There is no "c2o + hydrocarbons" involved in the process.
There is no "c2o + hydrocarbons" involved in the process.
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Joined: Jan 2005
Posts: 2,592
From: N Falmouth MA
^ What I was taught, hydrocarbons are unburned fuel particles.
c20 is carbon dioxide created after and during the catylist conversion. THey can combine in the cats. A brand NEW, assembly line fresh car can run so clean you can theoretically put your mouth on the tail pipe.. -But who'd want to, anyway..
Not trying to argue, just going by what I was taught. Carbon Dioxide when mixed with hydrocarbons CAN create water. There are enough free molecules for it... -Right?
EDIT: THis is what I meant..
http://www.fordscorpio.co.uk/cats.htm
c20 is carbon dioxide created after and during the catylist conversion. THey can combine in the cats. A brand NEW, assembly line fresh car can run so clean you can theoretically put your mouth on the tail pipe.. -But who'd want to, anyway..
Not trying to argue, just going by what I was taught. Carbon Dioxide when mixed with hydrocarbons CAN create water. There are enough free molecules for it... -Right?
The main emissions of a car engine are:
-Nitrogen gas: Air is 78 percent nitrogen gas, and most of this passes right through the car engine.
-Carbon Dioxide: This is one product of combustion. The carbon in the fuel bonds with the oxygen in the air.
-Water vapor: This is another product of combustion. The hydrogen in the fuel bonds with the oxygen in the air.
These emissions are mostly benign (although carbon dioxide emissions are believed to contribute to global warming), however because the combustion process is never perfect, some smaller amounts of more harmful emissions are also produced in car engines:
-Carbon monoxide: A poisonous gas that is colorless and odorless.
-Hydrocarbons or volatile organic compounds (VOC's): Produced mostly from unburned fuel that evaporates. Sunlight breaks these down to form oxidants, which react with oxides of nitrogen to cause ground level ozone, a major component of pollution.
-Oxides of nitrogen: Contributes to smog and acid rain, and also causes irritation to human mucus membranes.
These are the three main regulated emissions, and also the ones that catalytic converters are designed to reduce.
-Nitrogen gas: Air is 78 percent nitrogen gas, and most of this passes right through the car engine.
-Carbon Dioxide: This is one product of combustion. The carbon in the fuel bonds with the oxygen in the air.
-Water vapor: This is another product of combustion. The hydrogen in the fuel bonds with the oxygen in the air.
These emissions are mostly benign (although carbon dioxide emissions are believed to contribute to global warming), however because the combustion process is never perfect, some smaller amounts of more harmful emissions are also produced in car engines:
-Carbon monoxide: A poisonous gas that is colorless and odorless.
-Hydrocarbons or volatile organic compounds (VOC's): Produced mostly from unburned fuel that evaporates. Sunlight breaks these down to form oxidants, which react with oxides of nitrogen to cause ground level ozone, a major component of pollution.
-Oxides of nitrogen: Contributes to smog and acid rain, and also causes irritation to human mucus membranes.
These are the three main regulated emissions, and also the ones that catalytic converters are designed to reduce.
The Reduction Catalyst
The reduction catalyst is the first stage of the catalytic converter. It uses platinum and rhodium to help reduce the nitrogen oxide emissions. When such molecules come in contact with the catalyst, the catalyst rips the nitrogen atom out of the molecule and holds on to it, freeing the oxygen in the form of O2. The nitrogen atoms bond with other nitrogen atoms that are also stuck to the catalyst, forming N2.
The Oxidization Catalyst
The oxidation catalyst is the second stage of the catalytic converter. It reduces the unburned hydrocarbons and carbon monoxide by burning (oxidizing) them over a platinum and palladium catalyst. This catalyst aids the reaction of the CO and hydrocarbons with the remaining oxygen in the exhaust gas.
The reduction catalyst is the first stage of the catalytic converter. It uses platinum and rhodium to help reduce the nitrogen oxide emissions. When such molecules come in contact with the catalyst, the catalyst rips the nitrogen atom out of the molecule and holds on to it, freeing the oxygen in the form of O2. The nitrogen atoms bond with other nitrogen atoms that are also stuck to the catalyst, forming N2.
The Oxidization Catalyst
The oxidation catalyst is the second stage of the catalytic converter. It reduces the unburned hydrocarbons and carbon monoxide by burning (oxidizing) them over a platinum and palladium catalyst. This catalyst aids the reaction of the CO and hydrocarbons with the remaining oxygen in the exhaust gas.
Last edited by Bayer-Z28; Apr 30, 2007 at 07:28 PM.
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