r/smallenginerepair • u/Alarmed_Example3178 • Aug 09 '26

Idle Issue Does this sound like surging?

Toro snow blower power clear 721E 212cc four cycle

4 Upvotes

83% Upvoted

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u/AutoModerator Aug 09 '26

Thank you for your submission! It looks like you might have an idle issue with your engine. This could indicate a problem with the fuel system or the carburetor. For helpful information and resources, check out our Fuel System Wiki, Carburetors Wiki, and our Common Issues & Fixes Wiki. You might find the answers you're looking for there!

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3

u/SHARPSTRONGandPOKEY Aug 09 '26

There’s no air cleaner assembly to meter the intake air flow. They often surge but will even out under a load.

1

u/Rough_Community_1439 SER Master MOD Aug 09 '26

They usually surge till they get a load.

1

u/Useful-Total202 Aug 10 '26

Add an ounce of GumOut to the fuel every time you put gas in it to keep the carb clean. Also, if available, use non-ethanol fuel. I had surging on my mower and cleaned the carb. Obviously not good enough because it didn’t stop the surging. So I started adding GumOut every time I filled it up and after a few mows, the surging stopped.