
Fuel injector cleaners are used to clean the carbon deposits from your fuel system. For a 2006 Harley, you can use the Motion Pro Fuel Injector Cleaner Kit, which allows you to flush and back flush injectors for the best possible cleaning. However, it is important to note that you should never put anything other than gas in your fuel tank unless the gas has gone bad. Most brand-name fuels already have additives to clean injectors, and some users have reported never having issues with dirty injectors. Additionally, some fuel injector cleaners can eat through rubber fuel lines, so it is important to follow the dosing instructions carefully.
| Characteristics | Values |
|---|---|
| Fuel injector cleaner products | Seafoam, Chevron Techron, STP, Lucas Fuel Injector Cleaner, IC5 Fuel Injector Cleaner, Sea Foam Motor Treatment |
| Fuel injector cleaner kits | Motion Pro Fuel Injector Cleaner Kit |
| Amount of cleaner | Three to four ounces of fuel injector cleaner for two to two and a half gallons of fuel |
| Fuel type | Premium gas from a first-rank producer like Standard, Texaco or Shell |
| Fuel purchase recommendations | Always get fuel from a high-volume distributor; never get fuel while the fuel truck is replenishing the tanks |
| Fuel additives | Most brand-name fuels already have additives to clean injectors; ethanol is a common additive |
| Fuel injector cleaner use cases | Cleaning carbon deposits from the fuel system; removing oil deposits in combustion components; encapsulating water droplets |
| Precautions | Never spray cleaner directly into the throttle body; avoid overusing fuel injector cleaner as it can eat through the rubber fuel line |
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What You'll Learn

Fuel injector cleaner kits
There are a variety of fuel injector cleaner kits available for Harley motorcycles, with the Motion Pro Fuel Injector Cleaner Kit being one of the most popular options. This kit is designed for Harley Big Twin models from 1995 to 2005 and allows for easy cleaning of most fuel injectors. It enables users to flush and backflush injectors without the need for compressed air. However, it's important to note that an aerosol can of fuel injector cleaner is not included in the kit and must be purchased separately.
The Motion Pro Fuel Injector Cleaner Kit provides a high-quality tool to clean and check the function of fuel injectors. It comes with a machined billet FI cleaner body, a battery, and a pigtail specifically designed for listed fuel injectors. Before purchasing, it is recommended to refer to the application chart to ensure the correct kit is selected for your specific application. Additionally, Motion Pro offers separate pigtails to accommodate different FI injectors.
When considering fuel injector cleaners, it's worth noting that some Harley owners suggest that fuel injector cleaning may not be necessary unless the gas has gone bad or there are symptoms of dirty injectors. Premium gas from reputable brands like Standard, Texaco, or Shell typically contains cleaning agents, reducing the need for additional injector maintenance. However, occasional use of products like Seafoam can be beneficial, especially for bikes that sit for extended periods. Seafoam helps encapsulate water droplets and manage oil deposits, making it a popular choice for Harley owners.
While there are motorcycle-specific fuel injector cleaners available, some Harley owners opt for regular fuel system cleaners like STP or Techron. However, caution is advised when using these products, as spraying them directly into the throttle body can cause issues with sensors and other components. It is recommended to carefully follow the dosing and application instructions provided by the manufacturer to avoid potential damage.
In summary, while fuel injector cleaning may not be a frequent requirement for Harley motorcycles, having a reliable cleaner kit and knowing the appropriate cleaning products can help maintain optimal performance. The Motion Pro Fuel Injector Cleaner Kit, combined with recommended cleaning solutions, offers a comprehensive solution for Harley owners seeking to maintain their fuel injectors in the best possible condition.
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Fuel injector cleaner brands
When it comes to fuel injector cleaner brands for a 2006 Harley, there are several options available. Firstly, it is important to note that unless the fuel in your Harley has gone bad due to sitting for an extended period, you may not need to use a fuel injector cleaner at all. Most fuels sold in the US through typical retailers, especially from well-known brands like Standard, Texaco, or Shell, already contain cleaning agents. However, if you are experiencing issues with your fuel injectors or want to take extra care of your Harley, there are various fuel injector cleaner brands you can consider.
One popular brand is Sea Foam, which is commonly used by Harley owners. Sea Foam is effective in encapsulating water droplets and removing oil deposits, making it ideal for bikes that are not frequently used or stored for long periods. It is also affordable, usually costing around $6 per can. Another recommended brand is Techron, which can be added to your fuel tank with every fill-up. Lucas is another brand that is often mentioned alongside Sea Foam, indicating its popularity among Harley owners.
Other brands worth considering include Gum Out and STP, which is a general fuel system cleaner that can be used on fuel-injected bikes. It is important to carefully follow the dosing instructions provided by the manufacturer when using any of these products. Additionally, it is recommended to avoid spraying cleaners directly into the throttle body, as this can cause issues with sensors and other components.
While it is not necessary to choose a motorcycle-specific fuel injector cleaner, it is crucial to use a product designed for fuel-injected engines and to follow the recommended dosage for your fuel tank capacity. Overusing injector cleaners in a small gas tank can lead to issues, so it is important to be cautious.
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How to use fuel injector cleaner
Although there is no specific information on how much fuel injector cleaner to use for a 2006 Harley, there is some general advice on cleaning fuel injectors for Harley Davidson bikes.
It is recommended that you only use fuel injector cleaner if your gas has gone bad or if you are using low-quality fuel. Most fuels sold through typical retailers in the US already have some cleaning agents in them. If you are experiencing symptoms of dirty injectors, you should consider cleaning or replacing them.
There are many products available, and you don't need to choose a motorcycle-specific one. However, it is important to follow the dosing instructions on the product you choose. You can use the entire bottle of IC5 Fuel Injector Cleaner, for example, or combine it with Sea Foam Motor Treatment. Sea Foam is also recommended for encapsulating water droplets if your bike sits for long periods.
It is advised that you never spray any cleaner directly into the throttle body, as this can damage sensors. Instead, put the cleaner on a clean cotton towel and carefully clean around the butterfly and pintle valve tip.
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Fuel injector cleaner dangers
Fuel injector cleaners are used to clean the fuel injectors of vehicles, including motorcycles like Harley-Davidsons. While some people advocate for their use, others believe they are unnecessary and potentially harmful.
One potential danger of using fuel injector cleaners is that they can damage certain materials used in fuel system components. For example, some cleaners can attack plastics or loosen rust from the interior surfaces of steel fuel tanks in older vehicles. This can lead to injector failures. Therefore, it is important to follow factory-authorized instructions when using these products, as a chemical that is safe for one model might dissolve a particular plastic used in another.
Another concern is that fuel injector cleaners may not be necessary at all. Modern top-tier fuels already contain effective detergents that prevent deposits from forming in injectors. Additionally, injectors are designed to be self-cleaning, so using high-quality fuel from a reputable retailer or gas station is often sufficient to maintain them. Using too much cleaner in a small gas tank, such as that of a Harley, can also be harmful, as it can dissolve the pump intake sock.
However, there are times when fuel system cleaners are needed. For example, in some GM models, the fuel level sensors are prone to accumulating sulfur deposits, which can be dissolved using specific cleaners like Chevron Techron. In other cases, carbon deposits on injector tips can restrict fuel flow, requiring a different type of cleaner.
When considering the use of a fuel injector cleaner, it is important to weigh the potential benefits against the risks. While they can be effective in certain situations, they may also cause damage if not used properly. Therefore, it is always recommended to consult authorized instructions and seek advice from trusted mechanics or professionals before using any fuel additive.
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$10.99

Fuel type and fuel injector cleaners
Fuel injectors are now standard on all mass-produced vehicles, and they need less maintenance than carbureted engines. However, they do require some care and cleaning from time to time.
There are many fuel injector cleaners on the market, and most brand-name fuels will already have additives to clean injectors. Some popular products include Gumout High Mileage, Liqui Moly, Techron, Seafoam, and Lucas.
The recommended dosage varies, but it is typically around 2–3 ounces for every 10 gallons of gas or diesel fuel. Some products recommend using the cleaner every 3,000 miles or whenever symptoms of dirty injectors appear, such as sluggish acceleration and reduced fuel economy.
It is important to note that overusing the cleaner can be detrimental. It might dilute the engine oil, impairing its capacity to protect and lubricate parts, and it can also corrode rubber seals and gaskets in the fuel system.
Regarding the specific question of how much fuel injector cleaner to use for a 2006 Harley, one source mentions that a 2008 Harley Electra Glide Classic with a 6-gallon tank can use an entire bottle of IC5 Fuel Injector Cleaner, although the concentration can be adjusted as desired. Another Harley owner mentions using Seafoam on their bike, which is beneficial for bikes that sit for long periods.
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Frequently asked questions
The amount of fuel injector cleaner you should use depends on the product and the size of your fuel tank. It is important to follow the dosing instructions on the product. For example, if using Lucas Fuel Injector Cleaner, you should not add more than half a bottle to your full tank of gas.
There are many fuel injector cleaner products available, including STP, Chevron Techron, Seafoam, and Lucas.
The frequency of using fuel injector cleaner depends on various factors such as the quality of fuel used, the age of the bike, and the climate you live in. It is recommended to use fuel injector cleaner when deposits build up and cause a decrease in performance.
Yes, you can also use a fuel injector cleaner kit to clean your fuel injectors. This allows you to flush and backflush your injectors without the need for compressed air.
Yes, while fuel injector cleaners can be effective, they may also have some drawbacks. For example, they can eat through rubber fuel lines and damage sensors if sprayed directly onto them. It is recommended to follow the instructions and take the necessary precautions when using these products.










































