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Johnson Spark Plugs

Written by Nicholas Kamuda
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One of the key components in any Johnson outboard engine is quality Johnson spark plugs. Spark plugs may be small and inexpensive, but they are a key piece to getting your engine to work. If you are rebuilding an engine, or just replacing old plugs, getting authentic Johnson spark plugs can help your outboard's output thrive throughout the life of the engine.

The active portions of spark plugs create the explosions that drive the engine and provide thrust for your boat. The spark plugs in a marine engine are connected to the power pack, which is part of the boat's ignition system. Johnson power packs receive electricity from the ignition coil and release it in timed bursts to each of the spark plugs.

The electric bursts, or sparks, are timed to coincide with the rise of the engine's pistons to the top of their cylinders, which is also when the fuel/air mix in the cylinder is under the most compression. When the piston approaches the spark plugs, a tiny arc of electricity is emitted from the plug, igniting the fuel and air, and pushing the piston back down, thereby generating a stroke of power. Johnson spark plugs are made to work well with all Johnson engines and provide long lasting power for your boat.

Buying Johnson Spark Plugs

Spark plugs are available from many sources, including marine parts suppliers and authorized Johnson dealers. You can also purchase spark plugs and other engine components online. Many online OMC parts dealers also have retail locations in the U.S.A., and have been in the business for quite some time. They can generally answer any product or mechanically related questions that you may have regarding OMC parts and accessories.


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