How do you check fuel injectors?

To check fuel injectors, you can start by listening for a clicking sound while the engine is running, which indicates that the injectors are firing. You can also use a multimeter to measure the resistance of the injector's coil; a typical reading is around 12 to 16 ohms. Additionally, you can perform a fuel injector balance test or use a diagnostic tool to monitor the injector's performance while the engine is running. If issues are suspected, it may be necessary to remove and clean the injectors or have them professionally tested.