Disposal emergency: hum, jam or leak, and what each means
| Symptom | Likely cause | What we do |
|---|---|---|
| Humming, no spin | Jammed flywheel | Free the jam with the hex socket and reset |
| Silent, no hum | Tripped reset or dead motor | Check power and the reset button, test the motor |
| Water under the unit | Failed seal, flange or drain connection | Reseal or replace the part |
| Sink drains slowly | Clog in the drain line past the disposal | Clear the line |
| Bad smell | Residue on the grinding chamber | Clean the chamber and drain |
| Loud grinding | Foreign object | Retrieve it |
Safety first: switch the unit off at the wall, and use tongs or pliers, never fingers, to retrieve an object. If the sink backs up past the disposal, the problem may be the line. Drain cleaning describes how we clear a shared kitchen line.
Disposal dead or leaking?
Switch it off and call. We bring common replacement units to most visits.
Repair or replace
Repair when
- The unit is a jam or a loose connection
- The motor tests healthy
- A seal or flange can be replaced
- The unit is fairly new
Replace when
- The housing leaks
- The motor is burned out
- The unit is very old and noisy
- You want more grinding power
A leaking housing cannot be patched, so replacement is the only fix. Leaks at the sink flange or the drain elbow can often be sealed.
What should and should not go down the disposal
- Run cold water before, during and after grinding.
- Avoid grease, oil and fat, which coat the line downstream.
- Avoid coffee grounds in large amounts, fibrous peels and bones.
- Never put a hand or utensil into the chamber while the unit has power.
- Cut large scraps into small pieces.
Grease is the main reason a disposal-equipped kitchen line clogs. Many Pleasant Hill kitchens share a single run among the sink, dishwasher and disposal, so a downstream blockage can look like a disposal failure.
Installing or replacing a disposal
Most replacements reuse the sink flange and mounting ring. The new unit hangs from the existing mount, the drain elbow reconnects and the unit is wired to its cord or plugged in. Mismatched mounting kits are the usual snag, and we carry common kits so the job finishes in one visit.
Check that the new unit's horsepower suits your household. A small unit in a busy kitchen jams more often. A larger unit grinds more finely and strains the drain less. Our toilet repair page covers the other fixture that shares the stack.
What to do while you wait for the plumber
- Switch the disposal off at the wall and unplug it if you can reach the cord.
- Never put a hand into the chamber, even when the unit is off.
- Do not run the dishwasher into a disposal that is leaking or jammed.
- Empty the cabinet and place a pan under any drip.
What affects disposal repair cost
We give a clear price before work starts. Factors:
Insurance seldom covers worn disposals. It may help if a sudden leak damages the cabinet.
Want your real number? Describe the job on the call and we quote it before work starts.
Service area
We repair disposals in 94523 and nearby 94520 in Concord. The faucet repair page covers the other fixture at the same sink.
Disposal drain connections follow the California Plumbing Code, which is based on the Uniform Plumbing Code (UPC), including trap and air-gap or high-loop requirements for the dishwasher drain that shares the unit.
Common questions
Yes. The line is open 24/7. Switch the unit off at the wall and call, and we will book the earliest visit.
The flywheel is likely jammed. We free it and check for the cause.
No. Switch off power and use tongs. Better, call us.
A seal, flange or drain connection has failed, or the housing has cracked.
A red button on the base that trips on overload. Press it after unjamming, with power off first.
Yes. Grease and food particles settle in the drain downstream.
Still have a question about your situation? Call (855) 575-2890 any hour and describe what you are seeing.