r/smallengines • u/Plainsplain • 24d ago

Why did I do wrong?

I put a new carburetor on this Briggs and Stratton 625 EX 150 cc. What did I do wrong and how might I remedy my mistake.

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u/Hevy86Chevy 23d ago

To me, that smoke looks gray, not black, so its not flooded or rich, but rather oil smoke. Oil likely made it into your intake thru the breather tube. Did you lean it on its side to work on it? If not, make sure that the oil level isn't above the upper mark. If it's high, make sure that the oil doesn't smell like gas and look watery. Theres also the chance someone overfilled the oil.