Faint white smoke.

Anonymous-0 · Apr 19, 2012

My A is pumping white smoke and I know that is usually a sign of a bad head gasket or a crack. However I replaced the head gasket two years ago, there is no coolant loss, and no antifreeze in my oil. Pulled the spark plugs and no antifreeze on them. I even used a dual chamber UView tester to test for exhaust gasses coming out of my rad's waterneck, detected nothing. So I am stumped at this point. Only other thing I can think off is that the E10 gas that is in the tank is about a year old. Can old E10 cause faint white smoke?

Anonymous-0 · Apr 20, 2012

I see no issue here. The burning of gas results in combustion byproducts that include water vapor. If you are not using/losing coolant, have no indication of head gasket leak, I"m thinking that your IH muffler is cooling the exhaust down to a temperature where the water moisture from combustion condenses and shows as vapor. I would venture that this is the least important thing to worry about in your life.

Janicholson · Apr 20, 2012

Second the motion. Jim

Janicholson · Apr 20, 2012

Second the motion. Jim

Anonymous-0 · Apr 20, 2012

I did run the A for 45 min mowing with the engine set at max and it didn't clear up.

Janicholson · Apr 20, 2012

If the dewpoint is just rite, the mist will just be there. Coolant will produce white smoke that does not dissipate. (assumes coolant not just pure water in the rad.) Every 5 gallons of gasoline burned produces 1 gallon of new water that was not on earth before. Jim

SouthernFarmall · Apr 20, 2012

Oil is "supposed" to make blue smoke, but if there is not very much it can look more white than blue (at least to me) .

SF

IH fan · Apr 20, 2012

If it's water or coolant, it should not be visable after a few seconds. If it keeps it up, oil is blue or white and fuel is black.

FC Andy · Apr 20, 2012

Really? That's a cool trivia fact. I suppose that it is the result of chemical reactions. Does Ethanol or Diesel fuel do the same thing?

And, I also have seen them mist, when it is really high humidity on a cool morning (dew point, like you said, IE, foggy). Some of those mornings, the old 6.5 diesel never cleans up. Same for my 1/2 ton burning e-85. -Andy

Janicholson · Apr 20, 2012

Water is the ash of a hydrogen fire. Thus all fuels (Hydrocarbons)produce water in the exhaust combustion products in proportion to the hydrogen in the fuel. Acetylene is C2H2 THus when burning it in a neutral flame it produces 50% CO2, and 50% Water as ash. (not by weight) Jim

Owen Aaland · Apr 22, 2012

(quoted from post at 00:10:03 04/21/12) Water is the ash of a hydrogen fire. Thus all fuels (Hydrocarbons)produce water in the exhaust combustion products in proportion to the hydrogen in the fuel. Acetylene is C2H2 THus when burning it in a neutral flame it produces 50% CO2, and 50% Water as ash. (not by weight) Jim

Wouldn't the results be 1/3 - 2/3? Two oxygen atoms combine with the two carbon atoms and one oxygen atom combines with the two hydrogen atoms resulting in three molecules?

Faint white smoke.

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