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All-Terrain Lawn Tractor Forum :: Technical Forum :: Engine Tech :: Briggs and Stratton
 

  engine will not run right

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PostSubject: engine will not run right    engine will not run right Icon_minitimeDecember 30th 2013, 7:30 am
hello i have a 12.5 Briggs and Stratton that will not run right it will not idle and it smokes like crazy out of the exhaust. Another thing that it dose run perfect with out the air-filter. So please help thanks.
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PostSubject: Re: engine will not run right    engine will not run right Icon_minitimeDecember 30th 2013, 9:06 am
A carb cleaning might help.
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PostSubject: Re: engine will not run right    engine will not run right Icon_minitimeDecember 30th 2013, 10:23 am
yes, a good carb clean is a good start.
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PostSubject: engine will not run right    engine will not run right Icon_minitimeDecember 30th 2013, 11:37 am
the carb may be suspect. if it is smoking it may also have bad rings, or the muffler may have oil in it.
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PostSubject: Re: engine will not run right    engine will not run right Icon_minitimeDecember 30th 2013, 11:52 am
Before taking any other steps- verify oil is correct type, filled to correct level, and uncontaminated.


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PostSubject: Re: engine will not run right    engine will not run right Icon_minitimeDecember 30th 2013, 11:53 am
Could be rings, carb, too much oil could be causing the smoke, scored cylinder? But I would def start checking oil and a thorough carb cleaning.
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PostSubject: Re: engine will not run right    engine will not run right Icon_minitimeDecember 30th 2013, 1:43 pm
It's common to find engines with too much oil in 'em. I had a neighbor bring me one complaining of the same symptoms... they had filled the oil to the top of the filler nech... It was amazing that the crap wasn't hydro locking the piston in the up position. I drained most of it out, and ran it till the oil that had leaked into the muffler burnt out. Took of the head, cleaned the top of the piston and combustion chamber, bolted her up and it ran fine. Told the ladies to let ME service the oil from then on.

First stop in checking running issues is air filter, fluid levels, carb, and spark plug.
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PostSubject: Re: engine will not run right    engine will not run right Icon_minitimeJanuary 16th 2014, 7:33 am
clean the carb for sure.
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PostSubject: Re: engine will not run right    engine will not run right Icon_minitimeJanuary 23rd 2014, 3:22 am
What color is the smoke, blue or black?
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PostSubject: Re: engine will not run right    engine will not run right Icon_minitime
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