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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: Michael on March 04, 2018, 01:16:08 pm
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Any idea what this might be?
While diagnosing a flooding problem I discovered that both fuel bowls had this dirt looking stuff in the bottom of the bowls. The carb is only a couple months old (a professional rebuild that arrived appearing like new). Every other part of the carb looks like new when I opened it so am lead to believe it was not there a couple months ago. I have a glass fuel filter just prior to the carb and it is as clean as the day I installed it (long before the carb). I am at a loss as to what it is or where it came from. I wiped it out like microscopic dirt. Any ideas?
Ps. The flooding was due to something (this substance?) on the tip of one of the float needles.
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Welcome to the site
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I would say it's from ethanol, it wrecks havoc on carburetors. We have a lot of small engines, atvs, etc that need the carb cleaned or rebuilt from time to time. I even put ethanol treatment in but it doesn't seem to matter. Could be rust in the tank/ lines as well.