Boat Engine Basics ~ Fuel Delivery

Fuel delivery is an essential part of ensuring the operation ability of any boat engine. The purpose of this system is to mix together air and the fuel and then meter this mixture to the cylinder for ignition. There are two different types of fuel delivery methods that may be used in a boat engine: fuel injection or a carbureted system.

Both systems serve the same purpose; they just operate a little differently. But let’s focus on the properties they have in common. When a piston in pulled downward in the cylinder, the intake valve is opened and air is then pulled into the intake manifold. The fuel is then combined with air as it passes through the open valve into the cylinder. This process is also controlled by the timing shaft.

Clean and powerful engines prefer Yamalube 2M oil to ensure smooth sailings.