DanDare Posted February 13, 2023 Share Posted February 13, 2023 After running my 500SEC for a duration of 10-20 minutes, I see the accumulation of liquid behind the exhaust pipes, which then drips down. Upon olfactory perception, the odor of the substance is almost imperceptible. This vehicle lacks a catalytic converter. Is this considered typical? Is the substance in question water, and if so, what is its source? Is it possible for water accumulation in the fuel tank to go through the engine and out via the exhaust? Link to comment Share on other sites More sharing options...
cashewsdinner Posted February 13, 2023 Share Posted February 13, 2023 The phenomenon you are seeing is the condensation of water inside your exhaust pipes. The substance is not coolant originating from your engine. Do not concern yourself with it. Link to comment Share on other sites More sharing options...
jaybx Posted February 13, 2023 Share Posted February 13, 2023 It is quite probable that the presence of condensation in the exhaust system is the only cause for concern. Link to comment Share on other sites More sharing options...
Grubscrew Posted February 13, 2023 Share Posted February 13, 2023 Evaporation - it ceases to exist once the engine reaches its optimal operating temperature. There is no cause for concern. It is worth noting that I reside in Australia in a region that does not experience sub-zero temperatures. Link to comment Share on other sites More sharing options...
DanDare Posted February 13, 2023 Author Share Posted February 13, 2023 Gentlemen, I express my gratitude to you. I am relieved. By chance, I have placed the SEC on ramps and discovered that the muffler has corroded, causing water to leak out. Currently, I need to locate a replacement muffler and devise a plan for its installation. I am contemplating if it would be more advantageous to enlist the services of an exhaust professional for this task. Link to comment Share on other sites More sharing options...
JayB Posted February 13, 2023 Share Posted February 13, 2023 It is, in fact, a byproduct of the catalytic converter. During the second phase of exhaust gas treatment inside the catalytic converter, nitrogen oxides (NOx) undergo a chemical interaction with the precious metal catalysts (PGM) present in the ceramic substrate of the converter, resulting in the conversion of NOx to oxygen (O²). Link to comment Share on other sites More sharing options...
peonymuffler Posted February 15, 2023 Share Posted February 15, 2023 It is really quite beneficial and advantageous to get the car's temperature up to a high level, even to the point of being extremely hot, in order to eliminate any condensation present in the gasoline and oil. This is particularly important if the vehicle is idle for a significant period of time and is exposed to fluctuating ambient temperatures, whether it is parked in a garage or outside. Link to comment Share on other sites More sharing options...
believehead Posted February 15, 2023 Share Posted February 15, 2023 Water is a byproduct of combustion. Hydrocarbon fuels consist of carbon and hydrogen. In an unpolluted environment, they react with Oxygen to produce H20 (water) and CO2 (carbon dioxide). During the first cooling phase of the exhaust system, the water vapor resulting from the combustion process undergoes condensation and then drains out of the tailpipe. Once the exhaust reaches a high temperature, it is released as water vapor, causing the dripping to cease. Link to comment Share on other sites More sharing options...
Grubscrew Posted February 16, 2023 Share Posted February 16, 2023 My advise is to have the respected professionals handle the exhaust muffler installation, especially if welding is necessary. Link to comment Share on other sites More sharing options...
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