New plumbing on pump valve is popping?! Help

Just replaced the plumbing on a 4.0 gpm machine and the valve is making this popping noise every 10-15 seconds when the pressure washer is running? I have a job to get to today an would like to figure it out asap or if it’s not serious enough to need to figure out before doing the job. appreciate any input

What is?

1 Like

Video would help

I tried to add one but it wouldn’t let me sorry

Has to be a youtube link