When you close your trigger and your pressure washer sounds like it is cycling and is jumping or turning itself off and on, you may have a problem with your bypass.
Possible Problem
Solution
No Bypass Valve (unloader valve)
Install The Correct Components.**
By-Pass Valve Not Sealing
Check For Wear And Dirt. Clean And Replace As Necessary.**
Leak In Discharge
Check All Hoses, Couplings And Trigger Gun For Water Leaks And Replace/Repair As Needed.
** It is recommended that a qualified technician perform this procedure.