Question about Krups XP 4000 Espresso Machine

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Pump makes strange staccato sound at 1 second intervals. A little coffee dribbles out. Then it just shuts itself off. Seems to be a pressure problem?

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Check the grind on the coffee or the packing pressure used to tamp. If it flows great without coffee in the portafilter, then the problem is the grind or tamp. The grind might be too fine that the pump has to use so much pressure that the relief valve open and most of the water goes into the drain tray.

Posted on Jun 30, 2009


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1 Answer

How can i tell if my fuel pump is bad?

old post, but Ill answer this , as it seems most forums give bad advice. on this topic.
answer,. read the FSM , or or suzuki pit stop plus
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1 Answer

Leaking water under the drip tray

First, be sure to regularly push a straightened paper clip in that nozzle! It can get clogged with coffee grinds quite easily.

Then call Sunbeam and tell them you want the waste chute extender. It's a little plastic tube that fits over the nozzle to extend it further into the drip tray. Truth be told, you could probable push a 2cm piece of 3mm aquarium pump air tubing over it.

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I have been having trouble with the coffee coming out (vvery slow flow) so I descaled the machine today. Now its worse - it is just dribbling out - doesn't seem to have enough water going through. Can you...

2 things can cause this.
1. the grinder is set to fine abd you are creating to much pressure and the pump is having a hard time pushing water through.
2. You are getting a blockage in the brew head from coffee residue and oils.
Tru pushing the prre grind button and making a coffee without putting any coffee in. Blank shot. If it works its you grind. If not its your brew head. Needs to be cleaned.

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Try running the gro;up without the portafilter in place, what does the water flowq look like: is it a nice strong flow or barely a dribble. If if is barely a dribble, backwash machine with purocaff and check shower screen, that may be clogged. If you have a nice flow then try adjusting the grind on the coffee grinder.

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the needle in your k-cup holder is broken and over presure built up in the k-cup, and create security stop. Change our k-kup holder. if the needle is still in place the k-cup must be puncture on both side on top and bottom. if is right our needle can be block. clean with a little rod of stainless steel.

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I have a Karcher K 3.86 M electric PW with a similar problem: water leaks from the pump near the outlet and the pressure surges on and off continuously at intervals of 1-2 seconds. The leak appears to be coming from a very thin crack in the plastic pump head in what I think is the "unloader" valve portion. I read elsewhere that if you leave water in these PW's and it freezes it will crack, causing leaks. I don't know how you can empty all the water out so I think we must store these PW's in areas that won't freeze in winter.

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