Water coming out of detergent pipe from top for karcher 3030 B jet wash.When i start using the jet wash there is not enough pressure and water starts coming out of detergent pipe.How can i stop water coming out of detergent pipe

Generally speaking, In the top control head of most washing machines, there is a water level sensor that tells the machine when the drum has enough water in it and when to start the wash cycle according to what size load it is set for. In the older washers, it was basically like a barometric pressure sensor and had a clear plastic hose connected to it. When the water in the drum put sufficient pressure on the air in the hose, it would activate the switch and start the control timer, shutting of the water and starting the wash cycle. If your washer is new enough to show error codes, it may have some other version of this sensor but it will have to have something to say when enough is enough. Look in the control head on top. Good luck.

I see this lots of times , the detergent tank will only mt in the low pressure mode of nozzle , this is the only way a siphion will develop inside the soap tank and then high pressure can be used later to wrinse the item off well using just water

DISCONNECT HYDRO OR WITH ENGINE NOT RUNNING DISCONNECT SPARK PLUG THEN RE-LEAVE WATER PRESSURE BEFORE SERVICING the detergent pipe plugs into a pipe on the pump, under which is a spring and ball bearing (stuck open, debris) WEAR YOUR SAFETY GLASSES

How to Make Sure Pressure Washer is Safe to Use YOU CAN FIND YOUR OPERATORS MANUAL HERE!

if you have quick release nozzles take the nozzle out and try it it will not pull soap with normal nozzles or under high pressure

This fault is within the control head, under the detergent valve is a small spring loaded valve that acts to induce the detergent, this will have failed, the shaft of the component breaks off the disk base leaving a small hole in the centre of the disk. This is enough to allow pressure past the component. The machine will pulse when operated and will not induce the detergent. I've looked everywhere to find this part as I have a karcher with the same fault.

Hello Sue, you don't say where in the world you live, but if you are attempting to clean dirt and algae off pavers, you need to add a solution to the water jet via the inbuilt attachment. Mix a fairly mild solution of bleach and detergent, pus a dash or deodoriser to the cantainer. Put your karcher on low pressure and give all the blocks a good wetting. Do this in the morning so the solution doesn't dry. After 20 ~30 mins, Claen off with the Karcher on normal high pressure (not the tubo lance). HINT: Leave the trigger on all the time and don't stop and start using it. This will prevent hayraulic hammer which can split the pump head.

Hi I have a karcher 3.99 the motor comes on and water comes out however thre is no pressure i have tested the lance on my brothers washer and this is ok what is wrong

Water from the wash arms must be able to reach the detergent cup during the wash. It sounds as though the machine may be over-loaded during the wash and water does not cause the detergent to mix with the wash tank water. Try washing a cycle with nothing in the machine. Does the detergent still stick to the door?
If no, the machine is overloaded. Wash fewer items or smaller items so spray will contact detergent.
If yes, you have probably lost wash pressure. Clean all screens and jets.
Hope this helps,
Kermit

It will only pick up detergent if you use a low pressure detergent nozzle - or no nozzle at all. It also takes a while for the detergent to get to the nozzle.