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Old 10-04-2017, 10:45 AM   #1
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White smoke then dies


I have an Ariens riding lawn mower with a briggs model no. 331777-2372-g5 engine. I was mowing lawn the other day and all of a sudden the mower started bogging down and then let out a giant puff of white smoke from the muffler. I have never had this issue before. The mower starts up fine and runs for about 30 seconds and the same thing happens again. I dont know where to start or what this could be. I am new to the area of small engine repair. Thanks.
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Old 10-04-2017, 12:05 PM   #2
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Re: White smoke then dies


Check the gas for water.
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Old 10-04-2017, 09:15 PM   #3
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Re: White smoke then dies


Screw the dip stick back down.
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Old 10-04-2017, 10:01 PM   #4
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Re: White smoke then dies


Add some "heat" water replacer in the fuel tank.

Sounds like a possible bad fuel.

Was it sitting out in a rain storm?

Or did your fuel can develop a condensation of water, over a few days of heat and cooling nights.

Always use as fresh as you can get of gasoline in any small engine, they are very picky about their fuel.


ED
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Old 10-04-2017, 11:56 PM   #5
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Re: White smoke then dies


I had the exact same thing happen to my Murray riding mower with a Briggs and Stratton motor. Check your oil to see if it is full of gasoline.

What happened with mine was the carb float needle was allowing fuel to flow into the cylinder even when turned off. The fuel seeps down into the oil well and eventually fills it up with gasoline.

You'll need to either install a manual fuel shutoff valve or replace the needle.
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Old 10-05-2017, 12:43 PM   #6
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Re: White smoke then dies


The mower was stored in a shed so it was dry. The gas was the last of the gas that was in the gas can so that could be the issue. It was premium gas with no ethanol so I done know if that makes a difference. I bought a new carburetor and am planning on changing that, draining the gas, changing the oil and spark plug and putting in an inline gas shut off valve. I wont be able to do the work until the weekend. Hopefully this solves the issue and its not more serious. The mower is only about 3 years old.
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Old 10-05-2017, 12:48 PM   #7
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Re: White smoke then dies


Quote:
Originally Posted by vinced1213 View Post
The mower was stored in a shed so it was dry. The gas was the last of the gas that was in the gas can so that could be the issue. It was premium gas with no ethanol so I done know if that makes a difference. I bought a new carburetor and am planning on changing that, draining the gas, changing the oil and spark plug and putting in an inline gas shut off valve. I wont be able to do the work until the weekend. Hopefully this solves the issue and its not more serious. The mower is only about 3 years old.
When you get smoke the colour is a clue.

gas = black smoke
oil = blue smoke
water = white.
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Old 10-05-2017, 12:48 PM   #8
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Re: White smoke then dies


A near empty gas can stored over a little time WILL condense water out of the air.

You probably accidently poured this condensate into your tank, then ?

just clean out the fuel system, and try with FRESH gas.


ED
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Old 10-05-2017, 01:10 PM   #9
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Re: White smoke then dies


Thanks for the info. I will let you know how it goes.
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Old 10-09-2017, 07:28 AM   #10
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Re: White smoke then dies


Well... after all the work is complete it looks like a success. Everything seems to be working good so far. I hope it stays this way. Thanks for your help!
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