When i use the variable lance on my karacher, I cannot get full presuure. It continues to use the water at the low pressure rate, so when I trun the variable lance to increase the pressure no more pressure arrives? It's only on this lance
I too have this problem looks like during the winter the head cracked. Does anyone know where to get the internal plastic piece in the Vario lance tip to repair as I have two these that has done the same thing.I too have this problem looks like during the winter the head cracked. Does anyone know where to get the internal plastic piece in the Vario lance tip to repair as I have two these that has done the same thing.
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It isnt very clear your explanation of the problem but what type washer do you have first? It sounds like you have a bad unloader or need a new variable nozzle tip. Can you explain in more clear detail. Thanks
It sounds like you have the vario lance set to low pressure or "mix". If you twist the end of the lance you can increase and decrease the pressure. The setting you have it on is for when you are applying detergent through the pressure washer hence why it is a wider low pressure jet.
It could be the low oil cut off stitch, make sure the oil is clean and full, and the switch wiring is tight. Next is bad gas, water remover and octane booster can fix this, finally, replace the spark plug, as they are known to go bad quickly by the vibrations of these tools.
The oil in these pumps are factory filled and sealed, im not sure why there would be oil around the derergent lance... it sounds like your unloader valve/bypass valve is stuck and it takes a larger flow of water to activate it (as you get more flow on low pressure)
will have to be stripped down and lubed up or the bypass assembly/head replaced if its badly scored
hi mark, you do have a problem with the lance.
you need to disconnect the lance and straighten a paper clip and insert down the nozzle end.
use the machine to wash the dirt in the nozzle backward down the lance.
Dirt only in nozzle end.
if still no good, purchase some nozzle cleaners and file out nozzle very slightly.
Dear Osville,
It is not clear what type of lance or nozzel you have. You said that the machine works fine with the circulating water jet(the turbo). So it seems the machine is fine. I do sometimes service variable nozzels and variable lances. But the best solution is to replace nozzels and variable nozzles and lances with new ones. Regarding the fan spray setting it could have no pressure because it might be in the chemical setting. The chemical setting lets out a fan shape flow of water, but with less pressure. The chemical system only works on low pressure in domestic washers, that is why it needs a low pressure flat spray. The pencil jet has 2 jets comming out because if it is a lance or nozzel with ball bearings, these ball bearings must have stuck in a wrong position. Also 2 jets can come out, due to a damaged nozzel hole.
Altogether, the best advice is to buy a new nozzel or lance...which ever your machine uses. All Karcher machines have their own specific nozzels, lances and high pressure hoses. You cannot change these from one model to another.
Regards,
Fulltech.
Dear Davidpaulson,
There are many reasons why there is no pressure. The simplest one is try a new lance. The lance you say it is not blocked, but it could have a wider hole with wear and tear.
The second most possible reason is, faulty valves. The suction valves are the most that give low pressure when they are faulty. To check the suction valves, put on the machine in the normal way and as it is working, disconnect the water supply. Than check if air or water is blowing out from the inlet. This is not 100% but you can have a picture of the function of the suction valves.
On the other hand if you do this exercise with the outlet, after removing the gun, you can check for the delivery valves. If you feel suction at the outlet, than the delivery valves can be faulty.
If all is correct, than there must be a fault in the swash plate. This could become loose and so the pistons will stop moving. Also another fault could be broken springs.
Also if the machine is leaking, the high pressure and low pressure seals are damaged. This also lowers pressure.
Other faults are related to the famous spill valve. Also faults could be to internal water leakages, due to corrosion in heads. Finaly I like to add that a faulty electric motor, could also not deliver enough rotation and power, and this also reduces pressure. This could be rewinded or changed for a new one.
Regards,
MG.
Dear Pajodi,
I just came across your problem. I have just joined FIXYA, and solved various Karcher problems. First of all with all respect, the shop from where you bought the machine, must have told you all necessary instructions to operate your machine.
Now the soap always works on low pressure. So if you have a variable lance, turn it to low pressure. You can also remove the lance, and the soap will surely starts to work. With turbo lances, the soap system does not work. This concludes that the soap does not work when high pressure is used. Bigger machines do spray soap at high and low pressures. But these have regulating knobs, to swith off and on, the soap supply.
Regards,
MG.
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