Pressure hose not working on Karcher pressure washer

blockage in the wand nozzle jet

If hose fits over a hose barb try using a hose clamp from any auto supply store Or replace the hose barb GL

I fixed mine works good easy too watch my video step by step i put it on youtube
http://www.youtube.com/watch?v=UFXSLOBL0Mg

karcher K3.97 MB when connected up to tap and switched on pressure poor and motor seems slow cleaned hose end, and filter looks clean

There can be multiple problems with the burner.


Here is a link to a page for troubleshooting burners.

link

check the pressure relief valve, it is stuck open and not letting pressure increase in the pump

It sounds like you have cracked part inside. Parts availability depends on were you live???

This may not be a motor problem. It sounds like your pump is not working properly and the motor is just following the pump. First thing to do is check for leaks in the pump, wand hose, gun etc. It may also be a blown water seal inside the pump.

Check for possible loose connections, its possible it could be leaking which would cause the loss of pressure.

On the Kärcher, you have a bayonet mount at the base of the tip end of the pistol grip. This is where you attach different types of nozzles and gadgets after having removed the existing sprayer tube. Just push in and turn a quarter of a turn, then you pull it off the pistol grip. The hose is possible to remove from the machine as well, an ordinary threaded mount but since you need the pistol grip to regulate on/off this is probably not what you want to do. If the telescopic wand is made by Kärcher it should be very easy to snap it into place just like when you removed the sprayer tube/nozzle. If the attachment was made to fit Alto washers there is an inexpensive adapter that works very well. Good luck!