What would cause a '91 honda civic dx to burn white smoke from the exaust&or what seems like under the engine?

It only releases the smoke when I throttle (give it gas). Also, the engine sounds alot "deeper/slower", not the pep that it used to have before this began to happen.
What would cause a '91 honda civic dx to burn white smoke from the exaust%26amp;or what seems like under the engine?
Head gasket is leaking coolant into the engine.


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What would cause a '91 honda civic dx to burn white smoke from the exaust%26amp;or what seems like under the engine?
This is usually caused by water or coolant in your oil. You should have your car looked at by a mechanic
Reply:Your PCV (Positive Crankcase Ventalation) Valve may be leaking . Or it could be the hose going between it and the air intake manifold.





With it smoking when the pedal is increased may be a sign of worn piston rings or worn valve seals.





The combustion chamber maybe leaking some of it's explosed gas/vapor, into the crank case (oil cavities/chambers)





Does it have high mileage?





With a leaking PCV , it acts like a vacuum leak.





Normally the white smog is recycled back in to the intake by vacuum , to be re-burned off and sent through the muffler.





Any leaks behind the mass air flow sensor is un-registered air (to the Computer) going to the cylinders.





This leak has a leaning effect (added heat) to the combustion chamber/mixtures.





Simple fix : PCV @$10 (quailty....Don't by the cheap $3 ones) , Valve cover grommit @$3 , And a rubber hose @ $1.25 a foot'.





Pull them off the engine (simple), and take them to the counter at the parts store.

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