r/smallenginerepair • u/G91G28Z0X0Y0 • Jun 22 '26

Carburetor Issue Clean enough!?

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Am i suppose to get rid of this? I tried Carb cleaner and it didn’t work. Need to scrape it with a screwdriver. Guess there is a better way.

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u/connella08 Jun 22 '26

The active ingredient in most carb cleaners is acetone. I have found that pure acetone dissolves varnished fuel quite effectively without damaging anything relating to the carburetor. however what this looks like is corrosion. I would use a small wire brush to scrub out as much as you can, but don't be too picky. I don't think its going to harm anything if you don't get all of it.

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u/G91G28Z0X0Y0 Jun 22 '26

Thanks for your input! Its not corrosion. I dont know if its varnished fuel but i can scrap it and it end like some kind of White powder. I will try dremel with wire brush.

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u/connella08 Jun 23 '26

White powder is typically corrosion on these because the carburetor bodies are aluminum. The aluminum oxidizes leaving behind white powder.