Solved: Delonghi Magnifica coffee making weak coffee and spilling grounds everywhere 

I just found a solution to the problem I’ve had for years and never found the solution online. So I am putting it here just in case other people need it. 

Issue: 
Coffee is sometimes very weak

Other symptoms: 

  • Coffee grounds spill all over inside the machine
  • Some pucks are nice and thick, and some come out thin. 
  • Coffee gets stuck between the mill and the infuser in the feeder chute 

Solution: 

  1. Clean inside the infuser. 
  2. If this doesn’t work, clean and lubricate inside the infuser and replace the two O-rings. 

Long description: 

I was always told by the repair guys it malfunctions because the beans I use are too oily. I use European style dry beans, but they were insistent. So I never thought beyond it. 

When the machine is on and idol, I gently inserted a chopstick or spoon handle down the bypass feeder, trying to push down the ground coffee that’s stuck. 

Yesterday I finally realized that the bean is not stuck – it’s that the infuser is not properly depressing. 

Magnifica infuser has that metal disc filter, which is easily visible. That part is pulled down as the infuser is raised to the coffee infeed and to the water dispensing part. As it is pulled down, it creates the pocket where the puck is formed. 

When you take the machine in for maintenance, the tech would take this sliding mechanism apart, replace the o rings and lubricate the inside. After a while, it wears down and need to be refreshed. 

Otherwise, the disc filter part doesn’t properly slide down and the top of the infuser stays flat. Coffee beans that are spilling is dry, this is probably why.  

Also, the filter may only slide down partially. This is why the puck is thin. 

If it’s wet coffee grounds that are spilling, this is a weird one. Physical mechanism of this is hard to explain. But I watched it with my own eyes that the arm that scrapes the puck off broke the puck and left some on the infuser, which it scraped off backwards on the way back. All these are caused by the infuser being moved around the fixed notches on the machine side that fit into the gears on the infuser. So why should the timing be off? It might be because the disc and the rest aren’t completely fixed. Maybe other reasons. What I can tell you is that I was watching it as it happened. 

Anyway. Voila! No more wasted beans. No more frustration of not knowing if the next cup is decent or never getting a decent cup. No more frustration of cleaning the inside every day! 

This procedure should be used in between your regular maintenance and not as a substitute to it. This type of machine has a lot of moving parts, experience a lot of heat and pressure, and puts through a lot of super hot water. There are many other gaskets and parts requiring maintenance. Please do not skip the manufacturer-recommended periodic maintenance. 

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