Quick Answer: How Much Fuel Does A 4 Stroke Outboard Use?

How far can a boat go on a tank of gas?

Your boat may be able to go anywhere from 5 to 10 miles to as many as 30 miles or more on a tank of gas, depending on a number of factors, including what kind of boat you have, how fast you are going, and more..

How can I improve my boats fuel efficiency?

How To Save Fuel While BoatingTune your engine. Take your engine to the shop once a year for a tune-up and service, which helps it run more efficiently.Get the right propeller. … Check your propeller. … Clean your hull. … Measure your fuel flow. … Upgrade your motor.

How much fuel does an outboard use?

To determine an average fuel usage at gallons per hour (gph), divide horsepower by 10. Therefore, a boater with a four-stroke, 250-hp marine outboard engine running at full throttle, or about 6,100 rpm, is using 25 gph. But, an engine is most efficient at 75 to 80 percent of rated output rather than at full throttle.

Is it bad to run a boat full throttle?

As long as an outboard is propped correctly, running at full throttle is fine. Will it increase wear more than moderate throttle settings? Probably, but not by an appreciable amount. If you want an engine to last a long time, proper preventative maintenance is exponentially more important than throttle setting.

Is a 2 stroke outboard faster than a 4 stroke?

Since the two-stroke isn’t encumbered with a valve train, the engine has fewer moving parts. Thus, it has less rotating mass. A two-stroke outboard can often accelerate faster than the same horsepower four-stroke.

How fast will a 40hp outboard go?

Re: top speed from a 40hp 2 stroke yamaha??? 33 to 36 mph.

What is the best 4 stroke outboard motor?

Best Outboard EnginesSuzuki DF25. Above: Hour upon hour of testing has proven the reliability and easy starting of the DF25. … Yamaha F25. You’ve gotta love where an engine like the Yamaha F25 can take you. … Mercury 75/90/115. … Torqeedo Deep Blue. … Suzuki DF90. … Yamaha V-Max SHO 115. … Evinrude ETEC G2. … Yamaha F250.More items…•Jul 23, 2020

How much fuel does a 20 hp outboard use?

The typical figure used for fuel consumption is 10% of the rated HP per hour at wide open throttle. Calculating what the 1/2, 3/4, or 2/3 throttle settings produce is impossible to do accurately without a fuel flow monitor. So in your case, 10% of 20 HP is 2 (gallons per hour).

How much gas does a 6 hp outboard use?

I would use a conservative 3/4 gallons per hour for trip planning purposes. Do not forget that not all the fuel in the tank is usable and a 15% to 20% reserve of usable fuel is recommended. I usually estimate range based on a speed of 4.5 knots but once in the water will recompute range according to conditions.

What is the most fuel efficient speed?

55-65mphThe Energy Saving Trust says that the most efficient speed you can travel in a car in terms of achieving the best fuel economy is 55-65mph. Any faster, though, and the fuel efficiency decreases rapidly. For example, driving at 85mph uses 40% more fuel than at 70mph (oh, and it’s illegal too).

What is the most fuel efficient boat?

MJM Yachts: World’s Most Fuel Efficient PowerboatsMJM 29z power with single 260 HP diesel I/O.The MJM 36z underway powered with twin 220 HP stern drive Volvo Penta D3s.The MJM Yachts 50z, the flagship of the fleet.A 40z hull being removed from the molds after the oven post-cure process.More items…•Jan 7, 2016

How much fuel does a boat use per hour?

Many small, personal watercraft boats tend to use 3-8 gallons of gas per hour at cruising speeds, while faster boats like speed and motorboats can use 20-30 gallons an hour.

Which is better 2 stroke or 4 stroke?

Because 2-stroke engines are designed to run at a higher RPM, they also tend to wear out faster; a 4-stroke engine is generally more durable. That being said, 2-stroke engines are more powerful. Two-stroke engines are a much simpler design, making them easier to fix. They do not have valves, but rather ports.

How many miles per gallon does a boat get?

An average boat MPG or gallons per hour is around 1-4 gallons per mile at an average of 20knots.

How much fuel does a 150 hp outboard used?

For example, a 150-horse engine will use about 15 gallons per hour.

How many hours will a 4 stroke outboard last?

1,500 hoursA typical two-stroke or four-stroke outboard engine should provide 1,500 hours of run time. Based on the average use of 200 hours per year, this will last 7-8 years. However, changing your oil every 50 hours of operation and regularly flushing the engine can see your outboard engine last 10 to 20 years.

How much fuel does a 25 hp outboard use?

As a point of departure on the search for an answer; there is a rule of thumb that outboards consume about 1 gallon per hour for every 10 horsepower. That equates to roughly 2.5 gallons per hour at full throttle with a 25 HP motor. You will hardly ever run your motor at full throttle for an hour.

Why are boats so fuel inefficient?

The main reason why boats will always burn more gas than cars is they run on water. Aerodynamics, wind resistance, waves, and drag affect the fuel consumption of a boat.

How much gas does a 4hp outboard use?

Fuel economy depends also on wind and wave conditions and how much power is needed to ‘punch through’. In flat water, running below ‘flat out’, youll probably use ~1/2 gallon per hour with the 6.

Are 4 stroke outboards more fuel efficient?

Comparing fuel efficiency is a good starting point. The first thing to keep in mind is that both 4-stroke and direct injection 2-stroke outboards on average are more than 35 percent better than traditional carbureted 2-strokes on fuel consumption, according to Tom Mielke, outboard marketing director for Mercury Marine.

How much fuel does a 5hp outboard use?

With average fuel consumption of 0.7 litres/hr flat out, that extra capacity makes a difference.

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