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I have a craftsman lawn mower with briggs and stratton engine. When i hit the primer fuel sprays out of a white nipple above what I believe to be the fuel line. Is a hose supposed to be connected to this nipple and if so where does it connect to?
Thank you for the help

What's your model number? that will help US a ton.
https://www.jackssmallengines.com/jacks-parts-lookup/briggs-stratton-model-locator.aspx

917.374200

No that is the air vent to the bowl.
Your carb is flooding and needs to be cleaned.

Ok. is that why when it keeps smoking when it is running?

So that white nipple should not have a hose connected to it?

correct, i remember a similar thread, with a guy that has the same carb as yours. no hose connects to it.
your engine model # is 09P702-0177-F1

ok it is a craftsman, briggs and stratton, 5.50 OHV, 140cc Silver edition. Model 917.374200