This is a very well made Generac pressure washer. Over the past summer, I replaced the carburetor with a NEW OEM part and added a new aftermarket hose. I believe that the pump is starting to go, and is easily fixed.
The pump is available on Amazon for under $60 ( https://www.amazon.com/dp/B09QGNCZ42/?coliid=IGC4KP9H20BC9&colid=QP44YY6VH0Q&ref_=list_c_wl_lv_ov_lig_dp_it&th=1). Just four bolts to swap out the pump.
Please let me know if you have any questions. If it is listed, it is available.