What to Consider When Buying a Boat Motor on eBay

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What to Consider When Buying a Boat Motor on eBay

Boating is a popular leisure activity for many consumers. Consumers choose from many different types of boats, such as power boats, sail boats, or yachts, and many sporting activities associated with boats including: fishing, water skiing, wakeboarding, and scuba diving. A boat motor, or engine, is essential for any boating enthusiast, since many boats depend on it for movement. The boat motor, or engine, is one of the most important parts of a boat since it has a significant impact on the performance of a boat. The power and speed of a boat is determined by the horsepower of its motor. Consumers searching for boat motors on eBay find different types of boat motors including: two-stroke outboard, four-stroke outboard, diesel inboard, petrol inboard, jet, and sterndrive engines. Consumers should choose a boat's motor based on the type of boat. If an engine's horsepower is too low for a boat, it results in poor performance and an overworked engine. In addition, if a boat is overpowered, the vessel could exceed a safe operating speed for its design.

There are a range of choices of fuel systems for those choosing a petrol engine, such as the outboard, inboard, or sterndrive. The three main types of fuel systems include: direct fuel injection (DFI), electronic fuel injection (EFI), and carbureted fuel systems. Consumers should research different options on eBay and choose a boat motor and fuel system that meets their needs and budget.

Types of Motors

When shopping on eBay, consumers first need to consider the size and weight of their boat to choose a motor. Consumers should next figure out the recommended horsepower of a boat and choose a motor that conforms within the guidelines. The horsepower of a motor impacts the power and speed of a boat. Generally, it is important that a boat is neither overpowered or underpowered by its motor. Consumers interested in different watersports and boat activities that require a higher level of power and speed need to take that into consideration in both their boat and motor purchase.

Types of Motors


Two-stroke outboard

Excellent power to weight ratio

Simple design

Lower priced and weighs less than the four-stroke

Better fuel efficiency and usually quieter than carbureted two-stroke

No oil changes necessary

Better acceleration at the top end

Four-stroke outboard

Low emissions

Excellent fuel economy

Quiet operation

Oil added to the engine for clean and efficient fuel consumption

Good acceleration at the top end

Diesel inboard

No carbon monoxide release

Excellent torque

Long life expectancy

Low cost to run

Most weigh more than regular petrol engine

Petrol inboard

Simple drive system that lowers maintenance

Low running costs

Quiet operation

Sits out of the way


No propeller

Reduced danger to people and marine life


Ease of control

Used for petrol or diesel packages

Low maintenance

Quiet operation and efficient

Good value

Consult the chart to decide which motor offers the most benefits at the best price. Search eBay for a specific type of motor to narrow the results. Each motor type is offered by numerous brands including: Yamaha, Suzuki, Mercury, Mariner, Johnson, and Evinrude.

Outboard Motors

The outboard motor is a detachable engine that mounts on the stern of a boat. The outboard motor sits on the outboard brackets and ranges in horsepower from 1.0 HP to over 300 HP. There are two main types of outboard motors: two-stroke and four-stroke. The biggest difference between the two- and four-stroke engine is weight. They both have comparable horsepower. They also differ in fuel; the four-stroke engine burns petroleum and is more similar to a car engine, while the two-stroke engine uses a mixture of petrol and oil.

Diesel Inboard

Diesel engines use compression to power the engine. These engines range in size and horsepower. This engine weighs more than a petrol engine, so it is typically not used on smaller boats. It is used on larger boats, since it creates torque.

Petrol Inboard

This engine is similar to a car engine, but is modified in order to be a marine engine. Petrol inboard motors range in horsepower from 90 HP to over 1,000 HP and are used in a variety of different vessels. Inboard engines position amidship and not directly in the water. The motor's drive connects to the propeller at the bottom of the boat and a separate rudder is used for steering.


Jet propulsion engines have no propeller and sit amidship. The engine takes in water through a pump powered by an impeller. Water is dispelled at high pressure, which propels the boat forward.


In the sterndrive, the engine and drive are connected through the transom of the boat. These engines are inboard or outboard depending on their design. An engine is enclosed by the boat, and the propulsion system is outside, in the water.

Types of Power

Consumers looking for a petrol engine, such as the outboard, inboard, or sterndrive have three types of fuel systems from which to choose including: direct fuel injection (DFI), electronic fuel injection (EFI), and carbureted. There are benefits to each of the systems.

Types of Fuel Delivery Systems


Direct Fuel Injection (DFI)

Low emissions

Excellent fuel economy

Smooth idling

Superior throttle power

Instant key start

Self-diagnosing systems

Sealed fuel system

Adjusts automatically to altitude and temperature

Electronic Fuel Injection (EFI)

Low emissions

Great fuel economy

Uniform fuel and air distribution

Superior throttle power

Cold engine start

Self-diagnosing systems

Carbureted fuel system

Most affordable

Simple design

Each of the three fuel systems offer consumers a number of benefits. Look at the charts and read the descriptions before shopping on eBay. Consumers who are still unsure should research the types in greater detail online or read the descriptions posted by sellers on eBay.

Direct Fuel Injection (DFI)

In these systems, the fuel is directly inserted into an engine's cylinders. The direct injection increases an engine's fuel economy and compression ratios. The key components of this system are the high-pressure fuel pumps and fuel injectors.

Electronic Fuel Injection (EFI)

This system keeps a constant pressure with an electronic fuel pump. The air induction systems control the amount of air so that the fuel burns most efficiently. The electronic control system controls the fuel injection, determining the appropriate air-to-fuel ratio in the cylinders.


This type of fuel system has a carburetor on top of an engine. The carburetor controls the air and fuel flow into the engine. This process is controlled by the throttle body cable that connects the throttle at the helm.


Boat motors are available on eBay in a variety of different conditions including: new, re-manufactured, used, or not working. Exercise care when purchasing any boat motors used because of their mechanical nature. It is more reliable to purchase a new boat motor on eBay, although it is more expensive. Assessing the condition of a part is often the most important part of buying a boat motor on eBay. Carefully look at the descriptions of a motor's quality and at the return policy of a seller. If a seller is located nearby, the consumer should visit and test the motor in person. Look at any available pictures the seller posts online.

How to Buy a Boat Motor on eBay

Conduct a keyword search on eBay using words that describe your ideal boat motor. Before making a purchase on eBay, it is important to look at a number of listings. You should know exactly what you are buying. If you have any questions about the boat motor or its condition, do not hesitate to ask the seller. Research the seller by checking out their feedback rating and their number of transactions. Feedback and transactions give you an indication of the seller's level of experience. Consider using advanced search options and looking for nearby sellers. If the seller is located nearby, go check out the boat motor in person before purchasing it. It is a good option to purchase from one of eBay's Top-Rated Sellers, if possible. These sellers have extensive experience selling items on eBay and have received high feedback from their buyers. Look at the seller's other items to determine whether the seller specialised in boat motors. Purchase the boat motor from a seller with favourable return policies in case there are any problems.


Motors, or engines, are essential parts for many types of boats. The boat motor has the most significant impact on a boat's performance, including its capacity for power and speed. There are a number of different types of boat motors including: two-stroke outboard, four-stroke outboard, diesel inboard, petrol inboard, jet, and sterndrive engines. Consumers need to choose a type of motor and horsepower based on the type of boat. First consider the size and weight of a boat, and then figure out the recommended horsepower for the particular boat. It is important for both safety and efficiency reasons that the boat is neither overpowered nor underpowered. There are three main types of fuel systems for petrol engines, such as: outboard, inboard, or sterndrive. Consumer choices of fuel system include: direct fuel injection (DFI), electronic fuel injection (EFI), and carbureted fuel systems. Research all of the boat motors available on eBay, and choose the motor and fuel system that meets your needs and budget.

eBay offers a large selection of boat motors no matter for which type of fuel system, condition, and price you are looking.

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