Coffee makers which percolate are more commonly called percolators. These types of coffee makers boil the water up over a basket filled with coffee grounds. Electrical percolators use electricity to heat the pot and percolate the water, while stove-top versions use burner heat for the same purpose. Since most percolators contain similar components, the reasons why your particular brand may not be percolating are similar across most brands and models.
Place the stem and the basket into the percolator's well securely until both parts sit straight and do not interfere with placing the lid on top.
Push the lid of the percolator down after you have added the water and coffee grounds, and turn the lid to lock.
Plug the coffee maker securely into a grounded outlet if you are using an electric percolator. Inspect the power cord for tears or signs of wear that could affect the coffee maker's operation.
Fill the coffee maker's well with the specified minimum amount of water, which is usually about 8 oz., before operating it.
Decalcify the coffee maker as calcium deposits often affect its operation. Follow the specific decalcification instructions provided by your manufacturer. Some manufacturers recommend using cream of tartar and water in your coffee maker and running it through a complete brewing cycle to loosen deposits.