What colour smoke?
White smoke is caused by water being burnt check for a head gasket leakage.
cause you dont turn of the engine so there for its on but you need to rev a bit so then u have aa bit of smoke
Yes, it could. What could happen is it leaks as you are going down the road and leaks onto the exhaust manifold and creates the smoke.
Oxygen sensor
White smoke from the exhaust is a symptom of coolant entering the combustion chamber. This can be caused by a blown head gasket or a cracked head. STOP driving this vehicle and have it repaired ASAP. Serious engine damage will occur if you continue the run this engine, even for a short time.
Blue/grey smoke is usually oil. White smoke is usually coolant in the exhaust. IE: blown head gasket or something. note: if the smoke goes away after it runs for a minute it's oil runnung down the valves when it sits. Common problem, won't hurt anything.
As the Jets always fly on greater heights, the tempreature of the atmosphere is quite cold. As the exhaust gases comes out of the cylinder exhaust it's temp goes down suddenly due to its sudden expansion and gets traps into the dust particle or smoke present at there thus forms a streak
Then you have a shortage of combustion air, and it is drawing air down the unused fireplace flue. Close the damper of the unused fireplace, and check for exhaust fans that may be drawing air out of the house.
well depending on the age of the motor it could be burning oil, and if that is the case when you use your gears to slow down, everytime you shift into a lower gear it revs the engine up which if it was burning oil would cause smoke to come out the exhaust.
Downdraft systems have a suction unit (fan) mounted below the cooking surface and a vent pipe going outside. When the fan is on, the suction pulls the air containing the smoke and odors down and pushes them out the exhaust vent.
Sounds like you need a ring job, white/grey smoke from the exhaust usually means oil is burning in your engine. Your engine may need a tune up or a compression check, bring it in to your mechanic.
The engine obviously has some sort of contaminant on it. Such as engine oil, power steering fluid, brake fluid or possibly transmission fluid. Engine coolant will not smoke but will produce steam if it comes into contact with the engine. Track down where the smoke seems to be coming from and look for fluid residue in that area. I guess it is possible that you could also have a crack or break in the exhaust manifold near the engine.