You should hear a ticking sound.
How to fix a wall clock that runs slow.
If they are getting a collision or there is unnecessary friction among them smoothen out the edges of the handles with a piece of cloth.
To speed up the clock tighten the nut turn it toward your right.
To slow down the clock loosen the adjustment nut turn it toward your left.
If your clock is running slow then there might be an issue with the wiring.
Swing the pendulum on the inside of the clock if it has a pendulum.
Do you see any damage to the wires.
If so replace the cables with new ones and see if it works or not.
How to repair an old wall clock if your wall clock is off you will definitely replace the new battery if it remains dead.
Gently take off the compartment and take a look at the connections.
If not there may be internal damage.
Each turn of the screw slows the clock by two minutes per 24 hour period.
Again you should also check the electric clocks handles.
Turning the screw to the left will lower the pendulum slightly and slow down the clock.
How to troubleshoot wall clocks.
Use the fingers of your dominant hand to gently turn the regulation screw.
This screw regulates the speed of the clock.
It is possible to install the battery upside down where the battery is.
Wind the clock if it has stopped running.
The clock will run slower.