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Priming the Power Washer Pump

1:59
9:48
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At 1:59 in

How To Powerwash & Stain A Fence. Tips staining or painting a fence.

What happens here

Before applying high-pressure water to the fence, it's crucial to prime the power washer's pump to remove any air from the water line. With the power washer running, remove the nozzle tip from the gun. Squeeze the trigger to allow water to flow freely through the gun for approximately 30 seconds. This process purges air from the pump and hose, preventing pressure fluctuations and ensuring a steady, strong spray. Once the air is purged and a steady stream of water is observed, reattach the nozzle tip.

Goal: Remove air from the power washer's pump and hose for consistent pressure.

Tools and materials

  • Power Washer Gun — Directing water flow and attaching the nozzle
  • Power Washer MITM — The main machine for power washing
  • Rotating Nozzle — Stripping and tearing off old wood; temporarily removed for priming
  • Water — To purge air from the pump

What they say

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Okay, go ahead. Hang on. Once the power washer is started, it's pretty common for there to be actually air in the line cuz there's when you turn the water on, there's air in the water hose and it's sometimes it's difficult for the pump to prime itself. So once a power washer is started, you want to take off the tip of the the ho the nozzle or the tip of the gun and then Eric's pulling that tip off. Then you're going to want to run some water through it. The the power washer would actually be running at this point in time. And then you'll just run water through the gun without the tip on it. And that actually runs a high volume of water through it. And it's actually running running all the air out of the pump itself. And it helps the pump prime itself. And then you'll take and put the tip back on. Power washer is still running at this point in time. And then you can start running it after that. And what happens is if you don't go through this process after you start it, you'll be power washing and then all of a sudden you'll start to lose pressure and it'll pulsate and come on and off and come on and off. The pressure will go up and down and it's trying to prime itself. So, make sure you take the tip off, run some water through it for about 30 seconds, put the tip back on, and then continue going

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