I5000 pulsating

[Ultra Shine]

Any I5000 users ever had this issue.
On a wash package with 3 soap passes.
The rinse starts at the rear of the car. The water coming out is like a jack hammer. Major pulsation. The pump station is vibrating vigorously.

If I run a lower wash with only 2 soap passes it doesn’t do anything
View attachment 594DC83E-B57D-437F-8A0A-A82D57D95F46.MOV

 

[Greg Pack]

Not familiar with that unit but that looks like air in the lines. It could be getting in the system from an empty soap tank that has a solenoid open or an unloader. Anywhere thats leaking water on the suction side of the pump can allow air in the system. That's a guess anyway

 

[Ultra Shine]

I agree it sounds like air, but if I only do 2 passes of soap it’s fine.
Very weird

 

[MEP001]

It's definitely getting air in something, either the longer soap time is letting air back up into the pump or a tank is running empty and letting air into the plumbing. If there's an inlet check valve for the pump, disassemble it and make sure the check ball and o-rings are still good. Run the same thing you did in the video and watch all the tanks to make sure nothing is running empty.