Black smoke= rich condition(too much fuel and not enough air). Blue smoke = burning oil(engine components excessivly worn). White smoke= possible blown head gasket. Check oil to see if coolant is mixing in. Also check coolant level to see if it is loosing it. Have cylinder compression test done to verify head gasket problem. Other possibilities are a cracked cylinder head or engine block.
You will see blue smoke from the exhaust when starting the vehicle.
If black smoke is coming out of the exhaust of a 1986 Ford Ranger, it is likely burning oil. It's possible that a seal is leaking in the engine.
When an exhaust pipe is cool, the exhaust will start to allow water vapor to condense. If the exhaust is white you're seeing a vapor cloud; it's normal and unavoidable. Once the engine and exhaust are warm, the vapor cloud should stop.
what is the worst for your health breathing in tobacco smoke or exhaust fumes
Water vapour due to condensation in the exhaust pipe.
emissions and exhaust
a
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.
how can i get black exhaust smoke stuck on my dual exhaust
the smoke that comes out of a exhaust pipe is supposed to be white
If you have knocking from the engine and smoke from the exhaust then you have far more problems than the car just not starting. Sick professional help immediately.
White smoke especially when starting tends to indicate that water is finding its way into the the exhaust system, where it is boiling and exiting the exhaust as steam. The possible cause could be water getting into the cylinders (perhaps from a damaged gasket).