Laserwash 360+ presoak pass

[GP85]

Every 2-3 washes, it seems like our first presoak pass will come out light on one half of the vehicle? Next car, covers the entire vehicle. 2nd presoak pass is completely normal.

Has anyone ever experienced this issue? Or any ideas on a fix?

Appreciate the help

 

[AnalyticWash]

Likely a presoak hose is getting pinched. It might only happen with certain length vehicles which is why you don't see it every car.

 

[GPAW]

Check your bridge check valves, the presoak ones and the air check.

 

[washnshine]

If it is always the first half of the first pass it sounds like a check.