title_body: How could I fix espresso that pours too fast?
upvoted_answer: First things first; I advise you to decalcify your device in advance. This may fix many shady problems and taste issues.
  
  Then...
  
  There may be several issues that may affect your flow. These are what I can say at first sight...
  
  
  Grind size: Finer and more consistent grinds may help.
  Even distribution in the basket: if you don't evenly distribute the grounds, some water may leak around the grounds instead of brewing your coffee. Take care of even distribution.
  Tamping: Tamp evenly, consistently and a bit more forcefully when necessary. Some baristas tamp up to 20 kg-f during tamping.
  
  
  
  
  And a final note; for the given amount of grounds, a doppio (double espresso) is quite normal. Doppio should be 60 ml in your cup. In general, 14 - 16 gr of coffee grounds make a 60 ml doppio.