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      Mercruiser Ignition System Product Listings

      • Champion QL77JC4 Spark Plug
        $5.49
        $3.99

        Champion QL77JC4 Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion plug QL77JC4 features a copper core electrode that provides increased conductivity and heat control for good overall wear. It has been built to...

        Add to Cart
      • Champion RV15YC4 Spark Plug
        $3.99
        $2.99

        Champion RV15YC4 Copper Plus Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion RV15YC4 Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These...

        Add to Cart
      • Champion RS12YC Spark Plug
        $3.99
        $2.99

        Champion RS12YC Copper Plus Marine Spark Plugs Champion marine spark plugs are quality OEM replacements. The Champion RS12YC Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These...

        Add to Cart
      • Champion J4C Spark Plugs
        $3.99
        $2.99

        Champion J4C Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion J4C Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These marine spark plugs...

        Add to Cart
      • Champion RV91MC Spark Plugs
        $3.99
        $2.99

        Champion RV91MC Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion RV91MC Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These marine spark...

        Add to Cart
      • Champion RV9YC Spark Plug
        $3.99
        $2.99

        Champion RV9YC Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion RV9YC Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These marine spark...

        Add to Cart
      • Champion RV12YC Spark Plugs
        $3.99
        $2.99

        Champion RV12YC Copper Plus Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion RV12YC Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These...

        Add to Cart
      • Champion RN5C Spark Plugs CHA-RN5C
        $3.99
        $2.99

        Champion RN5C Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion RH12 Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These marine spark plugs...

        Add to Cart
      • Champion RS9YC Spark Plugs
        $3.99
        $2.99

        Champion RS9YC Copper Plus Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion RS9YC Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These...

        Add to Cart
      • Champion RL82C Spark Plugs
        $2.99
        $1.99

        Champion RL82C Marine Spark Plugs Champion marine spark plugs are quality OEM replacements. The Champion RL82C Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These marine spark...

        Add to Cart
      • Champion RN9YC Spark Plug
        $3.99
        $2.99

        Champion RN9YC Copper Plus Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion RN9YC Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These...

        Add to Cart
      • Champion RF10C Spark Plug
        $3.49
        $2.49

        Champion RF10C Copper Plus Marine Spark Plug Champion marine spark plugs are quality OEM replacements. The Champion RF10C Spark Plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. These...

        Add to Cart

      Mercruiser OEM Engine Parts Finder

      Mercruiser Ignition Tune Up

      The condition of your Mercruiser ignition system is critical to its performance. Over time your outboard’s electrical components can be effected by wear, corrosion or system leaks. A faulty ignition can scuttle a planned outing on the water, and possibly require an expensive repair. When your Mercruiser is hard to start or will not start, Wholesale Marine offers these suggestions for troubleshooting your ignition system. This procedure enables owners to fault trace if it requires a simple fix or a significant repair.

      When it’s Time to Tune Up Your Mercruiser Ignition System

      1)  First, check the obvious. Is there plenty of gas in the tank? Are all the fluids at the correct levels? Lastly, make sure all the wires are corrosion-free and connected properly. Try to start the engine. A quick fix may be all that it required.

      2)  If there is no start from the engine, a faulty or worn spark plug may be the culprit. Pull the plug and ensure that it is clean. If it is wet, this may be an indication of a bigger issue. If the plug is dry but discolored, it may have been the wrong type of plug for your motor. Check your owner’s manual and install the right plug.

      3)  If the plug is working disconnect the black/yellow wire from the engine to check the kill circuit. If the engine still does not start, the white/green and green/white stator wires need to be replaced. This will impact the engine starting cylinder. If the engine still will not start, the stator is bad and requires replacement.

      When it is time to troubleshoot or tune-up your Mercruiser ignition system, know that Wholesale Marine has everything you need. We offer a competitive pricing guarantee and most items flat rate ship the same day. Returns are stress free and we welcome your questions. Make us your one-stop boating shop! Join our Loyalty Program and use the points toward any future purchases. We’re here to take your call Monday through Friday from 9:00 AM until 6:00 PM EST at (877) 388-2628.