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Need HELP with Low Pressure system

Jimmyhd

New member
I recently took over a self serve car wash that was out of service for a year or so. I’m having an issue with the low pressure tire cleaner and pre soak. When selected I’m not getting any product out.
If I disconnect the solenoid from closing I will get product to come out it just will not work with low pressure.

So far I have verified:
-the lines are clean and clear
-Check valves are working
-Solenoid closes high pressure
- Solenoid for product opens

I’ve attached pictures of how everything is plumbed.
 

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