<ul> <li> There may be too much coffee in the filter. It should be one level scoop for a single espresso.</li> <li> Make sure do not use permanent and paper filter together.</li> <li> Whenpressingthe coffee withthetamper donot press asfirmly andmakesure yourgrind is for espresso maker.</li> <li> It may require descaling or the filters may require cleaning.</li></ul>