I put no-smoke in my crankcase to help with occasional exhaust smoke. When I cranked it after adding it smoked white smoke really bad. Can this be normal?

The engine was smoking very badly? Was any smoke coming out of the tailpipe? If not, either the exhaust manifold is broken or off the vehicle, or the exhaust pipe is broken, has a hole in it, or it is completely missing! Is it really loud?

You SAID the engine was smoking. But if you said that in error, then perhaps the exhaust system is okay, but oil is getting into the cylinders. Check for a PCV (positive crankcase ventilator) valve that may not be working right. Another thing that can make heavy smoke come out of tailpipes is a head gasket leak, with antifreeze getting into the cylinder chambers. How is the oil level and the coolant level? If there is that much smoke, it is advisable to not drive the vehicle for any reason except an emergency!

I seem to be answering a bunch of your questions today. Really hope they are helping in some way. White smoke can be lots of things. I little white smoke on a cool morning or a cold day when you first start the car is completely normal. Its just condensation inside the exhaust and cylinders themselves burning off. Lots of white smoke or smoking on a continual basis is not normal...and bad. Usually white smoke on a hot day, or white smoke after more than a few minutes of running the engine is a sign of coolant burn off. Most common causes there are either a warped or cracked head, or a bad head gasket. Again, hope that helps. I do hope all of these questions are in regards to a single car...if they are...it really might be time to consider either an engine swap or giving it up to the scrap yard...blue smoke AND white smoke add up to big problems. Both at the same time out of the same engine on a regular basis, really sounds like a cracked head in my opinion. Either way, good luck man!

These things are notorious for having crank sensor failures. Not too expensive and not too dificult to replace. I would try that first.

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Occasional blue/white smoke from the exhaust, especially when you lift your foot off the accelerator usually indicates worn valve stem seals.

what colour smoke ?? blue smoke is oil ,worn rings or valve guides ,or oil seeping into cylinder where oil passes through head gasket to lubricate cam ,white smoke is water ,head gasket ? black smoke is excess fuel

white smoke out off exhaust is coolant getting into cyl like a bad head gasket to much fuel would be black smoke

you have either a blown head gasket or cracked head. The white smoke is coolant passing through the engine and exhaust. The gas smell is from compression leaking past the gasket or head, pushing fuel vapor into the air.

change your oil and filter.try a oil designed for high mileage.caser oil and vavoline both make a good product.i hope this helps but your car is burning oil and ussually thats a mech failure. you might also try a premium oil additive like lucas. be sure that you dont over fill the crank case.for every quart of something you add you have to subtract a quart so the total meats factory specs

The smoke sounds like its burning off any oil accumulating in the exhaust, and only goes down to the point where the crankshaft stops splashing in the oilpan.

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There in only 1 thing i can think of where the white smoke is from it could be anitfreeze if so it would mean a cracked head or a bad head gasket if it gets worse then you have a big problem but if you check the water level and it looks fine then you should be ok for a while

if it was black smoke or a real dark gray then it would be oil


i hope this helps you out have a good day