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Any Lawn Mower Mechanics in the House?

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Any Lawn Mower Mechanics in the House?

Old 04-18-08, 08:40 PM
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Any Lawn Mower Mechanics in the House?

I started up my riding lawn mower for the first time this year..

First thing I did wrong was not drain the gas from last year so I have that going for me.. After about 1 1/2 minutes it started smoking a white smelly smoke (oil?).

I checked the oil (which I should have done from the get go) and it was at the "fill" line.. I don't have any ATM so I didn't run it any more..

Actually, I started it up again and just left it run for a minute or two and eventually (when it got hot?) it started smoking again.. The smoke seemed to be coming from the box that says "caution hot".

Any ideas?

Thanks!
Old 04-18-08, 08:43 PM
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Usually white smoke isn't oil. Oil smoke is sort of blue grey. Maybe a little water in the gas?
Old 04-18-08, 08:50 PM
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Originally Posted by tbird2340
I don't have any ATM so I didn't run it any more..
Old 04-18-08, 09:03 PM
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Did something get dumped on the muffler? Once it gets hot enough, whatever might be on there will burn off.
Old 04-18-08, 09:10 PM
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Originally Posted by Numanoid
I knew I should have specified...

I don't have any oil AT THE MOMENT!
Old 04-18-08, 09:11 PM
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Originally Posted by grenier
Did something get dumped on the muffler? Once it gets hot enough, whatever might be on there will burn off.
Not sure... Nothing today but I guess something could of while in storage or before I put it away.. How should I know if I should just see if the smoking will stop or if that would cause serious damage?
Old 04-18-08, 09:43 PM
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It is probably condensation (water). As long as the oil is full I wouldn't worry. Just throw some fresh gas in the tank and have at it.

Burning oil will be blue grey exhaust as soon as you crank it up. White smoke at temperature indicates water in the exhaust.

I would change the oil if it sat all winter.

Last edited by Pistol Pete; 04-18-08 at 09:45 PM.
Old 04-18-08, 10:49 PM
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White smoke could still be a sign of burning oil. if it dissapates rather quickly then thats a sign of steam, if it lingers then it's smoke.

The mower could have just collected some moisture in the tank from storage if so than it should be very little. After few mintutes of running should work itself through.

I would think that it could just be a sticking piston ring. Grab a can of Seafoam from Auto Zone and follow the directions.

Good Luck!
Old 04-19-08, 11:27 AM
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Im thinking Condensation too, let it run for 30 minutes and stand back 50 ft. with hose in hand
Old 04-19-08, 12:04 PM
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Oooh, Did you check to see if a mouse either made a nest in the muffler or died on it.

Personal experience reminds me that that makes white smoke also.
Old 04-19-08, 02:36 PM
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Good news.. Changed the oil, added some fresh gas, let it run for 5 minutes and the smoke stopped.

Thanks everyone!!
Old 04-19-08, 03:35 PM
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Now you have no excuse to do yard work.
Old 04-20-08, 08:38 AM
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Good. Get over here and mow my lawn.

Then get out of my yard.
Old 04-20-08, 08:43 AM
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"Ain't got no gas in it."


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