This kit uses the factory service port on the fuel rail to supply a steady flow of enrichment fuel to the plate. Locate the port near the rear of the passenger-side fuel rail (arrow). Unscrew the cap, and remove the schrader valve guts with a valve-stem removal tool. We got ours from Auto Zone for $1.49. Have a rag handy to soak up the fuel that may escape when the valve is removed.