5 Common Honda 4 Stroke Outboard Problems (With Fixes)

honda 4 stroke outboard problems
honda 4 stroke outboard problems

When buying a motor for your boat, the primary feature that you should look for is fuel efficiency. Even if a motor costs more initially, better fuel efficiency means you won’t have to pay less in the long run.

Among many brands in the market, you will notice Honda 4 Stroke outboard motors being mentioned repeatedly. These units are known for prime performance and bring an optimal value proposition to the anglers.

While these devices are amazing, recently many users have come forward with queries about Honda 4 Stroke Outboard Problems. If you are wondering about the same thing, let’s cover some common outboard problems.

Going through these should help people in understanding how they can avoid tons of issues with the engine. On top of this, users should also be able to understand how they can fix problems with devices in case they ever run into them.

Common Honda 4 Stroke Outboard Problems

  1. Decreased Engine Speed

Many anglers have pointed out issues where the engine speed decreases over time, and the motor comes to a stop. Users are unable to maintain a faster pace and can’t track at slower speeds.

On top of this, some users also mentioned issues with the engine stopping every few minutes.

If any of these symptoms apply to you, then it is likely that your unit is overheating.

One of the leading reasons behind overheating units can be issued with the water pump. If you are not getting the desired performance from the water pump, the engine will cause you most of the issues mentioned here.

So, depending on your warranty status, it is best to call your dealer and have him fix the unit for you. That way, you won’t have to bear any of the extra expense to get ahead of this motor problem.

Aside from that, you should also take a look at the cooling water port. There is a good chance that the intake port is blocked, and the water can’t cycle through the system.

In this situation, the best thing to do is to clean the port, and there should be a substantial boost in the performance of the system.

If you are having trouble trying to remove the dust from your water pump, then consult the manual provided along with the device.

This mostly contains all the steps required to clean the water pump. People can even look for videos online that might help them out.

If you are still confused about the process, then take your engine to a nearby workshop to get it fixed.

  1. Motor Not Starting

Minor issues like these are pretty common in motor units. Most of the time, these issues are solvable by trying a few basic troubleshooting methods.

So, if you’re struggling to start the motor or the motor is not operating properly, start by checking the spark plug gap.

spark plug

The owner’s manual will help you manage the gap perfectly. While you’re checking the gap of the spark plug, make sure to clean it as well.

In some cases, the spark plug can also get damaged. If this happens then replacing it with a new one is your only option.

However, if, for some reason, the motor is not starting at this stage, you will need to look towards other causes.

These include checking the wiring harness as well as the ignition coil. Observe the wirings carefully and if you notice any cracks on them then get them replaced.

Both of these components can be quite tricky to deal with if you’re a beginner. So, if you have a valid warranty, it is best to call the dealer and not try to fix the problem yourself.

Having professionals take care of your unit will not only ensure a complete solution but also won’t have to worry about further damaging the machine.

warranty graphic

Hopefully, this helps you get around the starting problem with your Honda 4 Stroke outboard motor.

  1. Poor Engine Performance

Even though Honda motors are popular for their exceptional performance, there have been some cases where people struggle to get the desired efficiency from their unit.

Most of the time, this problem is traceable back to issues with the fuel system.

It is common to see anglers use low-grade fuel in their units. This fuel not only decreases the efficiency of the system but further damages your motor.

So, if you believe that you’ve used lower-quality fuel, make sure to dump it all out and put premium quality fuel with the necessary amounts of fuel stabilizer.

Doing this will help you maintain good engine performance throughout your trip.

This will also have a positive impact on reducing the overall costs as you won’t have to spend that much on engine maintenance in the future. So, think long-term and avoid any of the fuel pump-related issues.

Lastly, checking the fuel filter is also a good practice. If the engine keeps stalling, then there’s a chance that there is a clog in your fuel filter.

Replace the filter immediately, and you will notice a tremendous increase in the performance of the system. The solution listed here should help you better manage your Honda 4 Stroke Outboard problems.

  1. Motor Not starting Due To Faulty Battery

Sometimes the motor not starting can be a sign of faulty batteries in your unit.

When it comes to this, people should note that there are several things that can be checked. Start by testing the connections on your terminals and ensure that these are tightly attached.

The Honda 4 Stroke Outboard cannot start if your batteries are dealing with issues.

The wiring not being attached usually means that the device is not receiving any current. So, people might be able to fix the problem by simply connecting the cables tightly to their terminals.


If you notice that the connections on your batteries are clogged, then make sure that you clean these up properly.

This should be quite simple as you only have to remove the dust from the terminals. As long as this is done, you should be able to fix the issue with your engine.

People might sometimes notice that the terminals also have corrosion formed on it.

This usually happens when you leave the battery running for a long time. If you make a habit of cleaning the terminals frequently then corrosion will never form.

On the other hand, if this has already started forming then the only thing you can do is scrub it off.

This will take some time, but it should come off in most cases. If people notice that the corrosion is stuck, then the next thing they need to do is pour some warm water over the terminals.

water bubble

This allows the corrosion to soften up after which people can use some pressure to remove it.

The corrosion coming off allows the device to receive current and fix your issue. However, if the battery does not have any power left then let it charge for some time.

Once this is done, you can then test the battery and see if it allows the engine to start properly.

Sometimes the battery you are using might simply be faulty. These last people a long time but if your battery was too old then it might require a replacement.

Make sure that you purchase a new battery to fix your problem. This should be from a reliable brand so that the performance can be at its peak. Additionally, this should also ensure that the battery lasts you a long time.

  1. Damaged Or Faulty Parts On the Engine

Finally, people should note that the problems provided above are mostly the ones your Honda 4 Stroke Outboard engine will run into.

However, if these steps are not enough to fix the issue, then there are some additional things that should be kept in mind.

There are tons of moving parts inside the Honda 4 Stroke engine. If you are having an issue that is not getting fixed, then there is a high chance that some part of your motor might be damaged.

People have to find the faulty part before they can replace it.

repair tools

While this sounds simple, trying to navigate through these different parts can take a lot of time and skill.

This is why if you are a beginner then it is best that you avoid trying it at all. Although if you want to fix the parts on your own then go ahead but remember to stay cautious.

People feeling hesitant trying to fix the problems with their engines should contact the support team for Honda.

Customer support will ask you some questions regarding the problem so make sure that you answer them carefully. Once done, the team will then provide you with some solutions.

Going through these should allow you to fix the problems in most cases. Though if none of the steps work then you will be asked to send your motor back to the brand. They will then get all the faulty parts replaced for you.

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