If you are still using the solenoid ozone injection system you should upgrade to the new ozone injection tower v3.0. SFT SHOP - Ozone Tower
This is the exploded view of the solenoid for the ozone injection v2 system. The brass sleeve has been upgraded to 316SS. The solenoid should be taken apart, inspected, and cleaned to ensure that it works properly.
Download PDF: Injector Solenoid Exploded View