What can cause huge clouds of smoke out the exhaust when accelerating

Tiny
BSTUBB123
  • MEMBER
  • 2015 KIA OPTIMA
  • V6
  • 2WD
  • AUTOMATIC
  • 83,000 MILES
When accelerating hard my car's exhaust bellows out huge clouds of white smoke or blue can't really tell. I've changed spark plugs, PCV valve, and my oil burns really fast in between oil changes. Burning smells can be detected when I get out car.
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Thursday, May 23rd, 2019 AT 1:40 PM

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Tiny
KASEKENNY1
  • EXPERT
Hi BSTUBB123,

If you oil is burning fast and you see smoke, more than likely it is blue smoke which means you are burning your oil.

Three main reasons for burning oil. One is your PCV valve. You replaced that so the next is oil control rings on your pistons. The last is valve guide seals. However, valve seals will not normally cause large amounts of smoke on hard acceleration. This is more indicative of oil control rings on the pistons. Valve seals are normally shown with a puff of smoke after a cold soak and then immediately on start up. Another way to tell is when you are braking with zero throttle input and you see smoke. Again, yours sounds like oil control rings.

Unfortunately the only way to fix either of these is to disassemble the engine and replace them.

https://www.2carpros.com/articles/excessive-smoke-coming-from-the-exhaust-pipe

Please let me know if you need more info and we can go from there. Thanks
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Thursday, May 23rd, 2019 AT 5:16 PM
Tiny
BSTUBB123
  • MEMBER
Well it be okay to drive for a while? Driving from Colorado to south Carolina next month and can't afford the repairs. Any small measures I can take to at least help me make it across country.
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Friday, May 24th, 2019 AT 5:12 AM
Tiny
KASEKENNY1
  • EXPERT
If you are going to take this trip there are a couple things I would do before going. First, is change the oil just before you leave. You should do this even if you are not burning oil but you want to make sure your oil is full. Then I would buy a case of oil and bring it with you. Every time you fill your tank, check your oil and top off as needed. Next I would replace your spark plugs because when you are burning oil, it leaves a residue behind and this can foul a spark plug. Last, I would get a good quality fuel system cleaner and run it through the fuel system. This will clean your injector tips from any of this same residue that gets left behind from the oil burning in the combustion chamber.

Lastly, I need to mention that this can do long term damage to the catalytic converter because the oil will overheat the material inside causing it to prematurely fail. There is no way to know when this will happen but if continued use in this nature, it will fail.

https://www.2carpros.com/articles/blue-smoke-from-engines-exhaust

Please tell me if you have more questions. Thanks
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Friday, May 24th, 2019 AT 12:02 PM

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