When To Change Your Johnson's Fuel Water Separator?

The frequency with which you should change your fuel water separator depends on a variety of factors, including the type of engine, the age of the boat, the climate, and the quality of the fuel. For example, one user reported that they change their separator every 12,000-15,000 miles, while another changes theirs every 10,000 miles or when it looks like absolute crap. Some people opt to change their separator with every oil change, while others change it annually or after a certain number of hours of use. It is recommended to refer to your engine's service manual for specific guidance on how often to change your fuel water separator. Additionally, it is important to drain the separator regularly to remove any accumulated water and to prevent water from reaching the engine.

How often to change fuel water separator in a Cummins engine

The frequency with which you should change the fuel water separator in a Cummins engine varies depending on usage and other factors. Some people change it every 10,000 miles, while others change it every 12,000-15,000 miles or every 100 hours, or even twice a year. It is recommended to drain the fuel water separator regularly to prevent water from getting through the injectors and causing damage.

There are also conversion kits available that can save you money on fuel filters and make changes easier. These kits include both primary and secondary filters, eliminating the need for an engine-mounted filter.

It is important to note that the price of the fuel water separator can vary depending on where you purchase it. Some people have reported prices as low as $50-60, while others have been charged as much as $150 by dealers. It is recommended to shop around and compare prices before purchasing.

Additionally, changing the fuel water separator is a relatively easy do-it-yourself project that should take no more than 30 minutes to complete. There are also videos available online that can guide you through the process.

In summary, the frequency of changing the fuel water separator in a Cummins engine can vary, but it is important to drain it regularly and change it at least every 10,000-15,000 miles or every year to prevent water damage.

Johnson fuel water separator part number and replacement

Johnson fuel water separators are available in 10 and 25-micron filtration. The 10-micron filtration products include the QKHH Replace for OEM Evinrude Johnson BRP Fuel Filter/Water Separator Kit, which replaces Johnson/Evinrude 5009676, 502906, and is compatible with Volvo 3851218-2, 3852413, 3862228, and Sierra 18-7789. This product is available on Amazon for $14.30. Another option is the Evinrude Johnson OEM 10 Micron Fuel Filter 5009676, which is also available on Amazon.

The 25-micron filtration product is the Evinrude Johnson BRP Fuel Filter/Water Separator Kit, which is also available on Amazon.

Regarding replacement, it is recommended to replace the filter once per season or as per the owner's manual based on engine use. Some users have reported replacing the filter every 10,000-15,000 miles, or every year, depending on usage.

How often to change fuel water separator in a Yamaha engine

Yamaha Motors recommends that you check and change the fuel/water separator filter on your Yamaha Outboard motor every 50 hours. They also recommend using a 10-micron fuel/water separator filter, especially for all EFI or HPDI model engines.

Some boat owners opt to change the filter every 100 hours or every year, whichever comes first. This is considered cheap insurance against the issues that ethanol fuel blends can cause.

If you are experiencing performance issues, it is always a good idea to change the filter, no matter the hours of usage.

How often to change fuel water separator in a Johnson engine

The fuel/water separator in a Johnson engine should be changed at least once a year, or every 100 hours, to ensure optimal performance and prevent water from reaching the engine. Some boat owners opt to change their separators more frequently, such as every six months or even every fill-up, especially if they are using ethanol-based fuel. This is because ethanol is a strong cleaning agent that can break down sediment in fuel tanks, potentially increasing the amount of debris and water in the fuel.

The fuel/water separator filter should also be replaced regularly, with some manufacturers recommending a change every 15,000 miles for a vehicle. For a boat, this may be less frequent, but it is important to monitor the condition of the filter and replace it when necessary.

It is also a good idea to install a transparent bowl or drain valve at the base of the separator to easily check for and remove any accumulated water. This can be done by draining the separator into a glass jar or small bucket to inspect for water or debris. If water is regularly found in the separator, it may be necessary to investigate the source of the water and take steps to prevent it from entering the fuel tank.

In addition to the fuel/water separator, it is important to maintain the fuel filter and oil filter in a Johnson engine. These filters may need to be changed more frequently than the separator, depending on usage and fuel quality. Regular maintenance of these components is crucial to ensure the engine receives clean fuel and oil, which can help extend the life of the engine and prevent costly repairs.

How often to change fuel water separator in a diesel engine

A fuel water separator is an essential component for any diesel engine, as it helps to remove water and contaminants from the fuel before it reaches the engine. Water in the fuel can cause extensive damage to the engine, including corrosion of fuel lines and damage to the fuel pump and injection systems. Therefore, it is important to regularly maintain and replace the fuel water separator to ensure the smooth and efficient operation of your diesel engine.

The frequency with which you should change your fuel water separator depends on several factors, including the engine's fuel consumption rate and the environment in which it operates. As a general rule, it is recommended to replace the entire filter assembly annually and to drain the water collection bowl at the bottom of the filter at least weekly. Additionally, the filter element should be replaced every 300-400 hours of use or sooner if the engine is operated in a high-humidity environment.

For example, if you have a 200-hp engine, you would need a 20-gallons-per-hour (GPH) filter. Our CFS1020 diesel separator cleans your fuel at 20 gallons-per-hour (20 GPH). So, depending on your engine's specifications, you can choose the appropriate fuel water separator to ensure optimal performance and protection for your diesel engine.

It is also important to inspect the fuel water separator regularly for any signs of water or contamination. By pulling a sample of fuel from the tank and examining it for signs of separation, you can determine if there is water present in the fuel. If there is, you can use a pump or a fuel additive to remove the water and ensure the smooth operation of your diesel engine.

By following the recommended maintenance schedule and choosing the right fuel water separator for your diesel engine, you can protect your investment and ensure efficient and reliable performance for years to come.

Frequently asked questions