ULTRASONIC CLEANING

[Earthquake Landscaping]

And sometimes... It just doesn't matter. Next door neighbour left regular with Ethanol, in a brand new brush chipper, over the Winter. It ( of course) refused to start.. Fresh fuel, drained the carb.. Nada!.. Spray, and it'd run... as long as you kept spraying.. Took the carb off, and ran it through the US ... But, could only take off the bowl.. No mixture screws. Wouldn't fire.. Did it again. still wouldn't fire. Swapped out the carb for an unused spear that I had ( a bit of McGuyvering to get linkages , etc..).. Started first pull, and runs like a champ!
Sometimes, Ethanol does enough damage to the internal passages of the carb, that the only viable option is replacement.
Also, when you can get a carb off Amazon for around $20.00... Is cleaning one really a good use of your time? Especially if you are charging for the repair?

 

[StarTech]

Please folks stop blaming all fuel problems on Ethanol even what is call 100% gasoline is not 100% as there are additives require by the EPA that can be left behind when it evaporates. Those additives can clog carburetor passages. Also both types of fuel can go bad otherwise too. It is just Ethanol will go bad faster and it does attract moisture which participate out as water as combines the Ethanol.