Eliminator one gallon multipurpose sprayer not building up pressure

Someone said they were having trouble building up pressure on their pump so I made this short video to try to help them out make sure the relief valve is shut off and all fittings are tight.
Follow Link to new video I made that shows you how to test the whole unit and how to fix it.
• Garden Sprayer not bui...
Garden Sprayer not building up pressure, trigger sticking, valves leak. EASY FIX
The video you are watching right now I made during my lunch break real quick to try and help out someone, I made more helpful video when I had more time.
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Please note that I am not a certified financial, career advisor, nor am I a professional mechanic nor electrician. The information provided on this channel is solely for entertainment purposes. My personal achievements are the result of hard work and dedication, your individual results may vary. These outcomes should not be considered typical or guaranteed. I like to put things together and take things apart and fix them while recording myself to show others how I did it, It's important to understand that I cannot make any promises or guarantees regarding your specific situation. While the content shared in my videos is accurate and reflects my knowledge as of the recording date, I cannot guarantee its accuracy at a later time.

[@robbyrob9698]

I purchased one from Walmart and it did not work day one due to a faulty pump.

[@BWV88]

I have the same issue with my sprayer and yours is the only video I could find about it. At least now I know what the problem COULD be. . Thank you for making this video!!

[@cwegner516]

Can you make a video of how to pump it?

[@cwegner516]

I checked all the points that you suggested, and still it will not pressurize

[@iluvturtlezcatz1396]

These are all faulty.

[@CWade-tw8ix]

I have the same tank sprayer but the problem on mine is the plunger …… you didn’t show that ?

[@sharonaumani8827]

Helpful, thanks.

[@thewholetruth451]

The o-ring in the plunger assembly doesn't seal sufficiently against the pressure cylinder to create a good blast of air into the tank.

[@stanperry9710]

This video is practically worthless