Mercury - Quicksilver Ignition Tune-Up Kit Ignition System Component Delco Conventional 34235Q1. Overview. Keeping your MerCruiser firing on all cylinders starts with a solid ignition system. The Mercury Marine 34235Q1 Quicksilver Ignition Tune-Up Kit gives you everything you need to restore crisp, reliable spark in your Marinized 4- or 6-cylinder GM engines with Delco conventional ignition systems. This complete kit includes a rotor, condenser, and points, each engineered to handle the heat, vi