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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28116
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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My Karcher Power Washer will NOT build up pressure. Water

Customer Question

My Karcher Power Washer will NOT build up pressure. Water flows through the pipe, but without pressure. The only problemI can see is that the Cap that covers the washing substance additive chamber on the back of the machine is broken.
Will this prevent the pressure from building?
Submitted: 1 year ago.
Category: Small Engine
Expert:  Curtis B. replied 1 year ago.

Spill valve / unloader is stuck in the off position. You need to remove the valve and free it up.