The short answer
Noise from a Costway portable washer is nearly always an unbalanced spin load or the machine walking on a hard floor rather than a failing motor. A light machine with a small basket has very little tolerance for either, and both are corrected in minutes with no parts at all.
What you are actually seeing
- Violent shaking and banging during the spin only — Means: on-page
- The machine walks across the floor as it runs — Means: on-page
- A rattle that changes when you press on the cabinet — Means: on-page
- A grinding or scraping from the tub — Means: on-page
- A buzz with the motor running but nothing turning — Means: on-page
- The spin stops as soon as it starts — Means: different-fault — Go to: costway-washer-cycle-fault
- A buzz with no cycle running — Means: different-fault — Go to: costway-washer-electrical-safety
- Body: Match what you see before you take anything apart. Violent shaking and banging during the spin only. The machine walks across the floor as it runs. A rattle that changes when you press on the cabinet. A grinding or scraping from the tub. A buzz with the motor running but nothing turning. Some near-miss symptoms belong on a different page: The spin stops as soon as it starts points at an out-of-balance stop rather than a noise problem, covered on costway-washer-cycle-fault; A buzz with no cycle running points at an electrical fault, covered on costway-washer-electrical-safety.
Causes, ranked for this machine
- An unbalanced load in the spin basket — Why this rank: First because a small basket has almost no tolerance for uneven loading and it produces the most dramatic noise on this machine
- The machine standing on an uneven or slippery hard floor — Why this rank: A light machine walks where a heavy one would stay put, and a mat usually stops it
- The machine touching a wall, a cabinet or another appliance — Why this rank: Contact transmits vibration into a much larger resonant surface
- An object caught between the basket and the tub, such as a coin or a button — Why this rank: A scraping from the tub is this until proven otherwise
- A worn bearing or a failing motor — Why this rank: Last because it needs a part and the four above account for most calls
- Body: Ranked for a portable washer: either a twin-tub with a separate wash tub and spin basket that drains by gravity, or a compact single-tub machine that fills from a tap adapter and drains with a pump. Most likely: An unbalanced load in the spin basket. First because a small basket has almost no tolerance for uneven loading and it produces the most dramatic noise on this machine. Next most likely: The machine standing on an uneven or slippery hard floor. A light machine walks where a heavy one would stay put, and a mat usually stops it. Third: The machine touching a wall, a cabinet or another appliance. Contact transmits vibration into a much larger resonant surface. Fourth: An object caught between the basket and the tub, such as a coin or a button. A scraping from the tub is this until proven otherwise. Fifth: A worn bearing or a failing motor. Last because it needs a part and the four above account for most calls.
What to check, in order
- Stop the spin and redistribute the load evenly around the basket
- Stand the machine on a rubber mat on a flat floor
- Move the machine clear of walls and other appliances
- Check between the basket and the tub for a trapped object
- Body: Each check rules out the causes above it. First, stop the spin and redistribute the load evenly around the basket. Second, stand the machine on a rubber mat on a flat floor. Third, move the machine clear of walls and other appliances. Fourth, check between the basket and the tub for a trapped object.
Checks you can safely make yourself
- Stop the machine, spread the laundry evenly around the basket, fit the cover and restart the spin — Tools: none — Time estimate: a quarter of an hour
- Stand the machine on a rubber mat on a flat floor and run the spin again — Tools: rubber mat — Time estimate: a quarter of an hour
- Move the machine so it touches no wall, cabinet or other appliance, and run a short cycle — Tools: none — Time estimate: a quarter of an hour
- Unplug the machine and look between the basket and the tub with a torch for a coin, a button or a clip — Tools: torch — Time estimate: a quarter of an hour
- Run the machine empty and note whether the noise is still present with no load at all — Tools: notepad — Time estimate: one short cycle
- Body: Checks an owner can make with the machine unplugged or by watching a short cycle. Step one: Stop the machine, spread the laundry evenly around the basket, fit the cover and restart the spin. Tools: none. Time: a quarter of an hour. Step two: Stand the machine on a rubber mat on a flat floor and run the spin again. Tools: rubber mat. Time: a quarter of an hour. Step three: Move the machine so it touches no wall, cabinet or other appliance, and run a short cycle. Tools: none. Time: a quarter of an hour. Step four: Unplug the machine and look between the basket and the tub with a torch for a coin, a button or a clip. Tools: torch. Time: a quarter of an hour. Step five: Run the machine empty and note whether the noise is still present with no load at all. Tools: notepad. Time: one short cycle.
Safety first
Safety
Unplug the machine before reaching between the basket and the tub, and never put a hand into a moving basket. Stop the machine completely before redistributing a load. Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. unplug-before-service
Where the owner fix ends
Call for a warranty claim or a technician when the machine runs empty on a mat, clear of every surface, with nothing trapped in the tub, and a grinding or knocking is still present. That points at a bearing or the motor, inside the cabinet.
Nearest pages of the same kind
Generalized information
This page is generalized across the Costway portable washer line. Twin-tub machines and compact single-tub machines share the ranking above but almost none of their parts, and this page does not cover a specific model or control revision. Family- and model-specific pages, where they exist, are linked below.
Links: - [Common COSTWAY Washer Problems](/blog/costway-washer-problems) - [COSTWAY Washer: Does Not Clean or Dry](/blog/costway-washer-cleaning-performance) - [COSTWAY Washer: Controls, Display or Error Code](/blog/costway-washer-control-fault) - [COSTWAY Washer: Cycle Will Not Run or Complete](/blog/costway-washer-cycle-fault)
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
