Exhaust pipe is blowing out a mist of black smoke

fuel injectors. they are most likely pouring fuel into the cylinders instead of spraying a fine mist.

White smoke is coolant getting into the cylinders , blown head gasket cracked head or crack in the block etc... . If the engine were running rich ,then black smoke would be coming out the tail pipe -exhaust !

White smoke out of the exhaust indicates moisture (water) in the exhaust. If the car is not driven very far each day, some moisture will collect in the muffler and cause white smoke for a short while after starting. If the smoke is continual, however, you need to watch you coolant level as you may have a blown head gasket.

Yes

Black exhaust smoke means the engine is burning too much fuel. 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. Black smoke is usually the easiest issue to diagnose and fix, but burning unnecessary fuel will definitely affect your fuel economy, so don't think of avoiding this one to save money, it won't work.
Any smoke coming from your car's exhaust pipe is a sign that your car is in distress. Pay attention to what it needs to ensure more miles for your vehicle.

Engine running very rich.

One of the gaskets has blown at a point where the a water jacket is blowning into the cylinders but not mixing with an oil jacket on the heads. Try to use some Bars Leak and see if you can get it to seal and if not, their are also aluminum shavings mixed with sealer for some of the worse problems. If it seals you will then know that it will need a gasket replacement at some point

if it is black smoke it might need an oil change, but if its whitish smoke then your piston rings are finished and need to change your piston rings, practically an overhaul.

exhaust is starting to blow what ? Yes exhaust blows out usually carbon which is CO2 out the pipes so please explain what is it blowing out when most cars do this all the time. Is the smoke that is blowing out of the pipe looks like white smoke or some other color ? Please tell us thanks.

Hi dluv, what color is the smoke coming from your exhaust? Is it black,blue, grey or white?