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Mower blowing blue white smoke + black oil out of exhaust

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  • 128 Answers

On most occasions your rings would be worn , but this can happen if over full with oil , or machine has been tipped over and oil has filled air cleaner assembly .

Posted on Apr 21, 2014

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Posted on Jan 02, 2017

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SOURCE: lawn mower blowing out white smoke

Change the oil...it is diluted with water or gas

Posted on Apr 21, 2009

  • 22 Answers

SOURCE: Oil coming out of the carburetor of my Honda Harmony 215 mower

unless the ground was a steep slope while mowing or the mower was tipped over 35 degrees or more in any direction except with the handle bars down (spark plug up is ok), it will most likley be a blown head gasket between the pushrod gallery and cylinder. remove the head and get it re-faced then assembly with new gasket. valve adjustments are 4 thou inlet and 6 thou exhaust

Posted on Jul 20, 2009

  • 77 Answers

SOURCE: Brand new weed eater lawn mower blowing white smoke.

Pull air filter see if theres any oil in it,make sure the oil isnt overfilled. Push mowers usually smoke like that if theyre overfilled,or tipped on thier side,if there is oil in filter simply take filter off,drain oil to correct level,and run it till smoke goes away. If none of this is the problem rings are probably shot. Weedeater is a cheap brand and theyre made cheap too,not made to last.

Posted on Aug 12, 2009

  • 133 Answers

SOURCE: my yard man mower is blowing black smoke when I

Like the other guy says drain the oil out. Disconnect the spark plug wire (for safety). Place the mower onto a stable platform to work from. To remove the drain plug usually you need a 3/8 ratchet and I use a short extension so I don't skin my knuckles. Put the extension end into the drain plug and remove. Have a drain pan to catch the used oil. Clean the area around drain plug first. When oil is drained replace the drain plug and tighten. Add your new oil. ONLY ADD ABOUT 15 OUNCES. Use SAE 30 motor oil. Once you get the oil in set it on a flat surface and check for the proper level. Add if needed. Usually the push mowers only use about 16 ounces. I start with 15 because it is easier to add than remove the oil. Replace the spark plug wire, prime and start. It may smoke awhile to get the old oil burnt up.

Posted on Aug 17, 2009

mowerman1857
  • 389 Answers

SOURCE: white smoke and oil spewing out of troy built

Check your oil level. If it is way over full, smell it to see if it smells like gasoline. If it does, you have a carburetor leaking gas into the engine crankcase. If you recently had the mower over on its side for blade changing or inspection, you have gotten oil up on top of the piston and it should burn off in a few minutes of running. Check your air filter to see if it is soaked with oil, replace it if it is.

Posted on Sep 19, 2009

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I HAVE A 2001 HARLEY DAVIDSON ROAD GLIDE ... IT PERIODICALLY BLOWS WHITE EXHAUST ... USUALLY WHEN I STOP AND ITS IDLEING


White smoke means water so there is an internal water leak into your combustion chambers causing the smoke. Possible head gasket starting to leak.... Blue smoke is oil and black is gas as far as the smoke emitting from the exhaust. Have you needed to fill the radiator lately? Good luck.

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Blueish white smoke comeing from exhaust


Hello There

White smoke when first started is normal. If white smoke continues you have an internal coolant leak, i.e., cracked head/blown head gasket.
Black smoke is caused by a rich fuel condition.
Blue smoke is caused by oil consumption.

You need to check your oil cap for yellow/white gunk on the cap if you have this then this is a sign your head gasket is cracked. Check to see if your radiator coolant level is down this is also another sign.

Hope this helps. Please don't forget to rate me.

Many Thanks

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X-Type Jaguar blowing white smoke


White smoke is steam. Blue smoke is oil, Black smoke is too rich a mixture.

Check your water to see if it is going down. Check your oil to see if there is any water in it.

some cars will steam when warming up as condensation which forms in the exhaust is burning off.

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Started smoking after running a while


Black smoke carburetor has too rich of fuel mixture. Blue or white smoke is oil getting into the exhaust because of either over filling with oil, engine was tipped on its side or piston rings are bad and is getting blow by through the cylinder.

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I'm looking to purchase a used car. I've been doing online research and saw this webpage http://www.usedcarsmells.com . They talk about exhaust color and smells. Is it true that you could tell a lot about...


Yes this is correct, you can get important information from the colour of smoke from the exhaust:

Blue/Gray Smoke: Blue/gray exhaust smoke is an indication of oil burning in the combustion chamber. These are possible symptoms and causes:
Valve Seals: Leaking valve seals will cause blue/gray smoke at startup because oil leaks past the seals into the cylinder after the engine shuts down.
Valve Guides: Excessive clearance between the valve stem and the valve guide allows oil to leak past the gap into the cylinder.
Piston Rings: Worn or damaged piston rings will cause blow-by resulting in blue/gray smoke.
Worn Cylinder Walls: Worn cylinder walls cause blow-by resulting in blue/gray smoke.
PCV System: A stuck closed PCV valve will cause excessive crankcase pressure resulting in blue/gray smoke.
Black Smoke: Black exhaust smoke is an indication of a rich fuel condition. These are possible causes:
Fuel Injectors: A leaking or dripping fuel injector will cause a rich fuel condition.
Fuel Pressure Regulator: A stuck closed fuel pressure regulator will cause a rich fuel condition.
Fuel Return: A restricted fuel return line will cause a rich fuel condition.
White/Gray Smoke: White exhaust smoke is an indication that coolant is burning in the combustion chamber. These are possible causes:
Cylinder Head: A crack in the cylinder head (around the coolant jacket) will cause coolant to enter the combustion chamber.
Engine Block: A crack in the deck of an engine block near the coolant jacket will cause coolant to enter the combustion chamber.
Head Gasket: A damaged or blown head gasket will cause coolant to enter the combustion chamber resulting in white/gray smoke coming from the tailpipe.

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1 Answer

Powermore 173cc OHV - suddenly running rough burning twice as much fuel as before. Blowing black smoke out of the exhaust. Is there a float that might be stuck open?


It.sounds like you have a hole in the float. If the float was.stuck, the oil would be filled with gasoline. With a hole in the float, the engine would flood, blow black smoke and run rough. Remember, black smoke is fuel, white smoke is water, and blue smoke is oil. Hope I helped.

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1 Answer

Gas Blowing Out of Exhaust


Hi Haley
Here are a few suggestions

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White smoke billowing from front of mower


is the smoke from the exhaust?or just the front of the engine look for a oil leak from the head gasket

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Husqvarna riding mower blowing white smoke out front


check the oil does it smell like gas the needle valve is not seating and gas over flows the carb and dumps it into the crank case

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1993 Nissan Maxima blowing white smoke out the exhaust


Rich fuel=black smoke.
Oil burning=blue smoke
Coolant burning=white smoke

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