I was driveing at 70 miles on the highway and saw black smoke coming from the tailpipe drove home and at idle speed it started smokeing white smoke turned it off three hours later started it and it smoked only white smoke
Hello!
There are two differnt reasons for black and white smoke coming from the tail pipe.
Black smoke means fuel runs rich (car getting to much gas). Check fuel pressure/air filter.
In some cases the white smoke means car is burning oil or transmittion fluid. Have tem checked/replaced.
If you can feel a smelly smoke it can be catalytic converter.
In a worsest scenario if car blowing white smoke it can be engine coolant is getting into an engine cylinder from a bad head gasket ,or a warped/cracked head. So you need to keep your eye on coolant level and check your engine for overheat. Also might be good to check your oil for traces of coolant (on a dipstick it would be a milky substance mixture of oil and coolant).
Good Luck
The white smoke is the result of normal condensation which builds up inside the exhaust system. So if it is thin like vapor, there is nothing to worry about since it will disappear quickly. On the other hand, thicker smoke is a pretty big issue. You may read more to figure out what is your problem here:
https://carfromjapan.com/article/car-maintenance/white-smoke-from-exhaust/
White smoke is is antifreeze problem cracked head.. head gasket.. intake gasket .. pull yout spark plugs check color of plugs if one looks real clean compared to the rest that will give a point where the problem is
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