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Briggs and Stratton blows blue smoke?

I have drained and replaced oil, gas, air filter and spark plug and engine STILL blows blue smoke after being started for about 30 seconds.

any help>>

Slugcampbell
April 2009

Briggs & Stratton Garden Tools, Lawn Mowers Briggs Replaced Gas

....and when oil burns it gives off WHITE smoke, not bluey/black which indicates fuel so definitely try the diaphragm first.

pleasant
April 2009

...or it's simply (and more likely) that the carb diaphragm needs replacing. A 15 minute job with a new iaphragm kit costing less than a pound.

pleasant
April 2009

Blue smoke indicates oil burning so 1) The oil level is too high 2) The crankcase breather pipe is blocked 3) the piston and cylinder have worn.

John
April 2009

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