Question about Karcher Garden
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Posted on Jan 02, 2017
If by pulsate you mean the engine R.P.M.'s rising and falling, this is natural. It's the result of the engine reacting to the sudden back pressure in the pump by idling down.
The engine continues to maintain a constant pressure on the water cycling inside the pump while idle. It cycles within the pump because water can't be compressed. If there was no place for it to go, the weakest seal would blow or the engine would die.
When you pull the trigger again the pressure is no longer bogging the engine and the R.P.M.s smooth out.
Also, it's not good for it to be running for any extended length of time without water or the trigger being pulled.
Hope this answers it
Posted on May 02, 2010
I have the same problem. With mine I have to remove the tip that I am using then pull the trigger and then replace the tip and pull and pressure should return. I believe that one of my valves is sticking causing me to reprime the pump frequently. I am trying to clean or replace my valves to fix the problem.
I hope this helps.
Posted on Apr 25, 2009
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