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bettybull, Plumber
Category: Plumbing
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Experience:  30+ years licensed & bonded plumbing contractor, historical renovations, house building,
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garbage disposal makes a rattling noise

Resolved Question:

My garbage disposal makes a rattling noise which sounds like something is broke so what could be the problem? I looked at the surface of g.b by looking down the drain with a flashlight and saw nothing that might have fell in it. I took a knife and rotated the wheel and it made a odd noise .
Submitted: 7 years ago.
Category: Plumbing
Expert:  bettybull replied 7 years ago.



The garbage disposal either has something caught in it or the unit itself has a problem. Turn power to unit off. With a flashlight, look down the gb. You should see some small pieces of metal that are attached to the grinding disc (fly wheel). These are the impellers and they should swing freely. If it is an old unit these may have worn out causing the noise , too. Sometime these impellers or blades get stuck throwing the gb out of balance. They may be freed up using a screwdriver and hammer. If not then

next, with your hand feel for any metal or hard object that may have become stuck in the unit. You should see, feel or find something that doesn't feel like it should be there. Take it out with needle nose pliers, etcs. If you just don't find anything, the unit bearings or motor could be worn out and we have found it is usually cheaper to replace than repair these units.

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