Smoke from exhaust

What causes a smoke and gas smell from an exhaust? Why do some engines give out too much exhaust smoke? What does white smoke from motorcycle exhaust mean? What could be the cause of black smoke from car exhaust? The first think you should check is your air-filter and other intake components like sensors, fuel injectors and the fuel-pressure regulator.

Other reasons could be a clogged fuel return line. White smoke can be a big problem or not, depending on the thickness. The white smoke is the result of normal condensation which builds up inside the exhaust system.

The most common reason for white smoke from the exhaust pipe that is condensed in the exhaust pipe. Steam is emitted by condensation in exhaust pipe which is seen at exhaust emission. The good news is, not all white smoke signals problems in your car, as some can be due to normal condensation too. A rule of thumb though is the thicker the white smoke , the greater is your problem. In this case, bad seals or piston rings cause oil to leak into combustion chamber which then mixes with fuel and burns.

The result is a white or light bluish smoke that comes out from exhaust manifold. If the exhaust smoke is black: Black exhaust doesn’t always indicate impending doom. If your car emits a little black smoke at start-up, but it clears up as the engine warms to operating temperature, don’t worry – that’s normal for some cars.

If it continues after the car warms up, there’s cause for concern. Below are the top causes of a car blowing white smoke from the exhaust system. Cracked Cylinder Head.

Whenever your cylinder head is cracked or damage coolant will begin to leak out of it. Thick, black smoke suggests that the engine is being flooded with gasoline. The black smoke may show there is a return fuel line which is obstructed. Fuel injectors and sensors might also be damaged.

Blue or gray smoke coming from the exhaust pipe. Black smoke or very dark smoke coming from the exhaust pipe. A new fuel odor or drop in MPG that seems to be coming from the exhaust pipe. When you see white smoke from exhaust upon starting your car, don’t panic. It’s common on most of today’s automobiles – and for the most part, the reason is cold temperature.

This is probably the result of normal condensation buildup inside the exhaust system. This kind of smoke disappears quickly. However, thicker smoke is a big problem, and can be caused the engine burning coolant.

As a result, This might indicate faulty fuel injectors, sensors, or some type of issue with the fuel pressure regulator. When white smoke is spewing from your exhaust , it is usually an indication that something is burning. The typical culprit is a burning fluid from the vehicle, but other causes are possible. A backyard mechanic can diagnose the problem by observing and smelling the smoke. It is never a good signal and can indicate several problems.

But if you spot it early, know what to do and act on it, these problems can be fixed. You may commonly see white smoke coming from the exhaust on cooler days upon starting. This is likely due to steam created due to the engine burning off the condensation. Leaking or blown head gasket: The head gasket is located between the engine block and cylinder head.

It seals the combustion chambers, as well as the coolant and oil passages. A leaking or blown head gasket can allow coolant to enter the combustion chamber. This in white smoke coming from the tailpipe,.