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No, it will not cause smoke from the exhaust pipe. However the leaking oil can drip on the exhaust manifold where it will be burnt and smoke.

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Q: Will a bad valve cover gasket cause smoke from exhaust?
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What would cause smoke resembling burning oil to be emitted from the exhaust manifold breather port on a Chevrolet 305?

Valve cover gasket.


What can cause blue exhaust?

Blue smoke can be caused by a blown head gasket. . Blue is oil being burned in the engine.


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bad head gasket , warped or cracked head


Can a turbo cause excessive steam to pass out of the exhaust?

For steam to come out the exhaust you probably have a bad head gasket or a cracked head. If the turbo had an oil seal fail it would cause blue smoke to come out the exhaust.


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Most probably, you have a valve cover gasket that is bad, and the oil is dripping down onto the exhaust manifold, and is being burned. Replace the valve cover gasket.


Does Heet gas additive in gas tank cause white exhaust?

No, white exhaust smoke is a symptom of coolant entering the combustion chamber. You my have a blown head gasket.


Can worn valve covers produce smoke?

If the valve cover gasket is leaking it will allow oil to leak onto the hot exhaust manifold where it will smolder causing smoke in the engine compartment.


What might cause white smoke from the exhaust of a Mazda 6?

The white smoke from the exhaust of a Mazda 6 can be caused by a number of factors. One of the factors is the lack of oil in the coolant. Another reason might be a blown head gasket.


Why is some kind of smoke or steam is coming up behind the valve cover somewhere on a 92 topaz Valve cover when the gasket was already replaced and engine degreased?

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It means you have a bad head gasket.


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How do you know if its a problem with the valve cover or if it actually the head gasket?

White smoke from the exhaust, loss of coolant with no apparent leak, oil level overfull, engine over heating, and a white foamy substance on the underside of the oil fill cap and /or dipstick all indicate a blown head gasket. A leaking valve cover will just cause a loss of oil and possible smoking from the oil dripping on the exhaust manifold.