80% of no start and pooting is water in the gas. Maybe 15% is old gas over 30 days old.When you last mowed there was enough gas in the carb to start it. Then the water gets in and starts the pooting. Partial choking helps suck out some of the water but if you had a lot of water then even the pooting quit cause there was more water than gas when you tried to crank up. . You gotta get rid of the water.
Maybe by now you got it motivating.
Here is the killer. During the day the gas tank gets hot, heats up, expands, and expels gas fumes and air.
At night -Tank cools, contracts and sucks in air With this high humididity these months that moist air condenses out and settles on the bottom of the gas which floats on water and is then first in line at the hose hole to the carburetor. If it was out the rain , it is doubly wet.
#1 got where I put cutoff valves on my gas tank hoses if none there and spring clamps on the carb hose end. It's just a small routine matter now to get the gas tank outlet in a low attitude, loose the hose and drain the water into a glass jar. I can clearly see water in the bottom. I pour most of the gas back in it.
#2 Most of my carbs have a 1/2" nut on the bottom of the float bowl so I just loose the nut a smidgen until the water begins to drain out plus open the shut off valve. I collect that water/gas also until gas is coming out and tighten nut back up.
Things are are somuch better now that I identified the problem. NEXT?
Invention #349 - Paint all exposed small engine gas tanks with brilliant gloss white paint to reduce heating and expansion due to exposure to sun light.
Invention#350 - Remove gas tank cap, (small engines) Spread small used plastic shopping bag side over opening. Use three fingers to poke bag down in hole to make a bowl. Place cap back over plastic and screw it down bout half tight. Next time you cut grass remove cap and dump out collected water that didn't get into the gas. Don't forget to reinstall the /some plastic after you finish work. I no longer have to spend half day trying to crank gas powered tools.
Hint for pressure washers- The pumps hate not being wanted or used with the engine running. The reason is they are subject to die early due to the extreme pressures when the wand is not being used. That pump cost more than the engine so treat it like your baby. Shut the engine down if you gotta take a 1 or 2 minute break. LOL