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What causes black smoke coming from muffler only in passing gear

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Your fuel system is sending extra gas to the engine, which is not completely burning it. No big deal, just don't stomp so hard on the gas pedal !

Posted on Apr 04, 2015

  • elizabeth Angelastro
    elizabeth Angelastro Apr 04, 2015

    Thanks, this is the first time its happened.

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1 Answer

Smoke and gas coming out of muffler


p0302 is a misfire in cylinder number 2 white smoke could be from coolant so if the head gasket is blown coolant can leak into the cylinder and cause the misfire are you loosing coolant that might be where its going

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Possible timing chain stretched putting engine timing slightly out causing fuel not to burn properly . And the noise could be the chain slapping about .

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Black smoke coming out in the muffler


Hi and welcome to FixYa!

If there's a black smoke coming out of the muffler then have the o2 sensor replaced. The air fuel ratio has irregularities and by replacing the o2 sensor the problem can be resolved.

Hope this helps and thank you for using FixYa! Have a good one!

Feb 21, 2011 | 2001 Kia Rio

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What is causing white smoke coming out of the mufflers when I start the engine?


It's normal for a thin white smoke to come out of the exhaust at initial start up. This is caused from moisture built up in the exhaust burning off. However if there is a continuous flow of thick white smoke it could be a blown head gasket causing coolant to burn.

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What are the possible causes of smoking from the exhaust? My car is a Toyota AE 11O, year 2000


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

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White smoke coming from the muffler, loud noise...


One potential cause is too much gas. It may be running "rich". Your car may also be burning a little oil. White smoke is water or antifreeze. If you are loosing coolant from the radiator, it's probably a blown head gasket. If not, it is just condensation in the exhaust pipe that is evaporating as the pipes heat up. If the car is running too rich, the unburned gas will cause black smoke and burning oil smoke will be blue.

Hope helps (remember rated this).

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White smoke is water. Blue smoke is oil. Black smoke is excessive fuel.

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Gears on my stick shift are starting to feel hard to shift


I would take it to a shop and have some general routine maintence done on it fluids, filters, spark plugs, etc.

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1 Answer

Engine Trouble


Your getting backfires? hmm interesting. Seems like your engine is getting flooded and either purging it out of the exhaust or burning it all at once or both (backfire). Sounds like a leaky engine valve to me.There again the bluish smoke indicates to me thatyou are leaking oil somewhere- bad rings or head gasket maybe, which could cause a loss of compression which could also cause your problems.That rattling from the left/rear side sounds like a bad muffler try kicking the muffler (not hard though) next time you walk by it.

Mar 10, 2009 | 1993 Nissan Altima

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