Low pressure

Douglas Hicks

New Member
Monday I replaced one of the ceramic pistons (it was cracked) in my TS 2021 general pump. Tuesday nite we did a Burger King. The Presure Washer had very low pressure. I shut off the machine, pulled the supply hose from the tank, had good flow. Then I pulled the hose from the unloader (YVB7K pressure activated unloader) to the pump intake, good flow when the pump was on. Then I removed the nut that covers the spring/plastic thing. I could hear water gurgling, let water come out of the open port. I put the caps back on, started the pump and still had no/very little pressure. I screwed the knob on the unloader down, and up a couple of times. Then I had good pressure.

Last nite I did another resurant, same thing, no/low pressure. This time I just played with the ;unloader and finally got good pressure.

Any thoughts, do I need to replace the unloader?
 

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