Water dropping silencer

[shqamar]

hey guys ,
i often saw people writing water dropping silencer or there car dropping water from silencer when they race there car or usually in morning time i would like to know what does that means , does it means your engine is very strong ? does that means your rings are very strong ? does that means your walves are working fine ? i mean what specifically water coming out from silencer means in terms of car engine and performance and most importantly where that water comes from ? radiator mm i dont know please share your knowledge in this regards in details thanks in advance .

[irfansiddique]

Water coming out from silencer means that you engine is making right amount of compression (in layman s terms, engine is strong and everythingng is working great)

[XT]

if car is running on petrol then engine is very well tuned. If its on cng then water is a natural by product.

[asifshah]

salaam:

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water is a by-product of the combustion of hydrocarbon/gasoline. gasoline does contain hydrogen, and when gasoline is burnt, some of that hydrogen combines with the oxygen being used to burn it, producing water.

most of the time, the exhaust is hot enough & the water remains in the form of invisible water vapour. when engine is cold, the exhaust pipe is cold, or the outside air is cold, this water may condense and become visible as steam or as liquid water dripping from the tail-pipe.
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in combustion of methane we get:<o:p></o:p>
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CH<SUB>4</SUB> + 2O<SUB>2</SUB> → CO<SUB>2</SUB> + 2H<SUB>2</SUB>O + energy <o:p></o:p>
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in combustion of hydrogen we have:<o:p></o:p>
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2H<SUB>2</SUB> + O<SUB>2</SUB> → 2H<SUB>2</SUB>O + heat <o:p></o:p>
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similarly during all combustion processes the resultant includes formation of water vapour. <o:p></o:p>
water from the tail-pipe also indicates that your air/fuel ratio is ok_ & the engine is tuned correctly.
but in adverse cases it may refer to a leaky head-gasket too!
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[MominHaq]

https://www.pakwheels.com/forums/cng-mechanical-technical-performance-appearance/71135-water-silencer-what-does-means

Another good explanation from the thread below:
https://www.pakwheels.com/forums/cng-mechanical-technical-performance-appearance/90596-silencer-flow-water

dear fellows,I beg to differ...
it doesnt show the condition of engine.It just indicates that fule-air mixture is inright proportion.The engine may well be excellent but water comming down the exhaust pipe alone is no indication.Other may rectify but i have seen few messed up engines with blue smoke and water comming together.

SO if you have doubts about your engine,Rev it up to see if smoke comes out of engine.If you can seebluish smoke that goes a long way...Your car's engine needs attention.

In shot,water simply means good fuel-air mixture to burn.

Hope it helps.regards

[fasfas]

If water drops, it should mean right combustion.

If you know some chemistry...

Combustion
for CNG, it's like

CH₄(gas) + 2 O₂(gas) → CO₂(gas) + 2 H₂O(Liquid) -891 kJ/mol

partial combustion or improper mixture ratio (air+cng); changes the scenario as complete fuel is not burnt. CNG loss and our oil gets dirty, oxidation of oil as Carbon tries to react with oil what synthetic avoid much better. etc. etc.

Methane - Wikipedia, the free encyclopedia

for Petrol
There are different carbon compounds in raw petrol ranging C5H12 to C18H38,
Octane molecules have eight carbon atoms in the formula i.e. C8H18. This is what is achieved for Octane ratio by purification, processes..

2 C8H18 (Liquid) + 25 O2 (Gas) -----> 16 CO2 (Gas) + 18 H20 (Liquid)

Petroleum - Wikipedia, the free encyclopedia