No high pressure soap in one bay

[hitchpatolive]

I have a bay that keeps "losing its prime" on high pressure soap.

If I turn down my water flow until the pump starts to capitate the soap will come through. As soon as I turn the water flow back to normal for high pressure the soap trickles to a stop.

Any ideas/opinions would be appreciated.

 

[MEP001]

What do you mean it "trickles to a stop?" Does the pressure remain good but you don't see any soap?

You might need to leave the valve partially shut to force the pump to draw soap.

 

[hitchpatolive]

When I open the valve up enough for the pump to stop capitating the pump doesn't draw the soap. So when I have the valve almost all the way closed it will draw but as soon as I open it up it stops drawing.