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Have everything going now. Both problems solved with check valve replacements. Thank you all for your advice.

Can someone tell me why the system lost the draw on the soap line. I removed the 1/4" line from the flow meter so it could draw directly out of a small container of water. The line was from the container to the manifold with the three 1/4" lines. No suction from the manifold. Please help a new...

Thank you for your help.

There is only one check valve that I can find at the pump stand. I assume this is the weep system check? Is this a off the shelf spring check or is it specific to the car wash equipment? Thank you for responding!

One month as new owner of 40-year-old wash. 7 bays, 20-year-old Mark VII equipment. Quite a learning curve. I have 2 bays next to each other which seem the have the same problem. Low pressure for the wand. Reading about 900psi on gauge. Feels very weak compared to the other bays. I noticed...