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Why would a car burn oil when it does not leak or blow blue smoke?

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2015-07-17 17:42:06
2015-07-17 17:42:06

More details would be helpful. However if your car is using too much oil it has to be either going on the ground or thru the engine. Please try to clarify and give more details for instance how much oil is it using? Has the car sit for a long time? Is there any sign of oil on the engine itself? Is there any signs of oil underneath the car look well at the underside of the floor board? , EzForJesus

It could be that the piston rings have rubbed the side of the cylinder and caused wear ,you may have to have the engine rebuilt. You can't always see the smoke. It may only smoke when you are traveling at high speeds and disperses in the wind.

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No you can not and if you tried to do it you could very well blow up or burn up either.


They aren't blowing smoke back. They are blowing air onto the glowing end to help it burn. The breath supplies a burst of oxygen that may be the difference between the cigar continuing to burn or going out.


White smoke is eaither a blown head gasket or you have water in the fuel system. This is not to be confused with flooding an engine and seeing white vapor coming out of the exaust in which that would NOT be smoke, it would be gas vapor's. If your burning oil, the smoke will be blue and smells of burnt oil.


Because it is starting to slip and is ready to burn out.


2 stroke engines burn a mixture of oil and gas. The smoke, typically blue, comes from the burning of that oil in the fuel.


Thick white smoke is caused when coolant gets into a cylinder and from there into the exhaust. It is a sign that if it is not fixed real soon, you will blow or burn up your engine.


the smoke is probly actually blue but appears to be white blue colered smoke is oil burning after vehicle sits oil drips into the cylinders from the valve guide seals causing it to burn and smoke upon start up of vehicle


Burning oil emits blue smoke. Black smoke is caused by an overly rich fuel mixture. White smoke is coolant entering the combustion chamber.


could be dirty injectors? bad mix of fuel to.. could be as simple as needing a tune up COULD BE BAD VALVE SEALS OR PISTON RINGS, MAKING IT BURN OIL...


Mainly because of the smoke. In a fire, you would die from suffocating before you burn.. And the smoke rises so you stay on the floor to avoid breathing in the smoke.


no smoke is produced when you burn it init.


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A car blows blue smoke usually when it is burning oil most of the time it is a burnt valve. Which requires pulling the head and machining it followed by reseeding the valve. = blue smoke is caused by oil burning more likely to be worn out valve stem seals than a burnt valve if valve is burnt, you will get backfiring in engine seals just allow oil to run down valve stems into combustion chamber a good mechanic will have a special tool to hold valves in posotion with out removing the heads a lot less costly than removing heads --As I understand it, the blue color is not from burning oil, but from oil failing to burn. The oil forms tiny droplets that make the smoke blue just as the sky or sea. In any case, your main suspects will be valve guide seals, piston rings, and turbocharger.



sound like bad rings It doesn't sound like bad rings, if it was burning oil the smoke would be blue. Black smoke sounds like it's running too rich, that would explain the running rough, stalling and lack of power, it's getting more fuel than it can burn.


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