solenoid

Anyone know why or what's causing there to be chemicals in my solenoid (? relief valve? I believe it's called???)? It is happening on 3 of the chemicals but not on my other ones

Hey guys, I’ve got a Ryko signature series self serve station. I had this issue with bay 3 with a solenoid that was bad holding my valve open. Before I ordered the block with new solenoids/coils I was tinkering with it and pulled the solenoid/coil off and went outside to mess with bay 3 from the...