Question about Craftsman 3 gal. Air Compressor, 1.5 hp, Horizontal k

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The compressor i have sat a long time and when i turn it on just a buzzing noise comes out. any ideas

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The buzzing your hearing is your motor trying buy unable to start. There are really just two possibilities depending on the size and type of your compressor. For either type you could have a bad starting capacitor. If you have a motor repair shop near by this is an easy and fairly inexpensive fix.
If your starting capacitor is good your compressor is most likely seized up. If your compressor is a small hobby compressor with a diaphram your diaphram has dry rotted and is preventing the motor from turning. If your compressor is large enough to have a piston their is most likely rust in the cylinder that is seizing your piston in place. Generally for compressors less than 50 gallon it's more cost effective to replace the compressor rather than trying to repair this problem.

Posted on Jul 27, 2010

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