Rajan Wilcox
Cleaning your GSXR fuel injectors is a vital part of maintaining your Suzuki GSX-R motorcycle. Clogged injectors can cause performance issues such as restricted fuel flow, rough idle, engine hesitation, reduced engine power, poor gas mileage, and increased emissions. There are several ways to clean them, including using a fuel injector cleaner, a polyether amine fuel cleaning product, or a DIY method involving a 9V battery and carb cleaner. You can also take them to a specialist shop for ultrasonic cleaning. It is recommended to clean your fuel injectors once or twice a year, or when you notice performance issues.
How to clean GSXR fuel injectors
| Characteristics | Values |
|---|---|
| Symptoms of clogged injectors | Restricted fuel flow, rough idle, engine hesitation, reduced engine power, poor gas mileage & increased emissions |
| Causes of clogging | Improper storage, bad gas, contaminated fuel system |
| Cleaning methods | Running the bike, fuel treatments, manual cleaning with carb cleaner, using an ultrasonic machine at an EFI shop, using a 9V battery |
| Fuel injector cleaners | Lucas Fuel Injection cleaner, Seafoam, Polyether amine fuel cleaning products (BG 44K or Techron) |
| Other methods | Using petrol and used oils, flow matching injectors |
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What You'll Learn
Using a fuel injector cleaner
When using a fuel injector cleaner, it is important to follow the instructions on the product label. Some products recommend using the cleaner with a full tank of gas. The amount of cleaner to be used also varies depending on the product and the size of the tank. For example, one user recommends using about a quarter of a bottle of Lucas injector cleaner for each tank, with the entire bottle meant for 25 gallons.
It is suggested to run injector cleaner through the bike twice a year, especially when bringing the bike out of storage for the winter and before putting it away for the season. It is important to run a few tanks through the bike after using the cleaner to ensure it is all out before adding a stabilizer for winter storage.
While fuel injector cleaners can be effective, some users have cautioned that they can also do more harm than good in certain cases. It is recommended to research and choose a suitable product to avoid any potential damage. Additionally, running the bike can help clean the injectors, and for severe clogging, it may be necessary to manually clean the injectors or seek professional ultrasonic cleaning services.
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Cleaning manually
If your GSXR fuel injectors are clogged, you can try cleaning them manually. One method is to use a 9V battery and a pressure pack of carb cleaner. First, squirt the cleaner into a closed injector using the tube on the pressure pack. Then, hit the injector upside down onto your palm a few times to dislodge any debris. You can also visually inspect the injector screen for any blockages. Next, put more carb cleaner into the injector and let it sit for a few minutes. Finally, power the injector and blow through it with the cleaner, using a rag or your thumb to hold the pressure pack tube in place. Be careful not to get your face too close, as the cleaner may blow back. You can also use a high-pressure air hose to finish off the job.
Another method for cleaning GSXR fuel injectors is to use an additive such as Seafoam or Chevron's Techron. These products can help to clean the fuel system and improve engine performance. However, some people believe that additives are not very effective and that manually cleaning the injectors is the best way to ensure they are thoroughly cleaned.
If your bike has been sitting for a long time and the fuel injectors are clogged, you may need to take them apart to clean them properly. This can be done by removing the throttle bodies from the motor and hooking them up to a pressure system with injector cleaner. You can then apply power to each injector individually and let them run until they produce a super-fine mist. After that, you can reinstall them and run regular fuel through them to blow out any remaining cleaner.
It's important to note that fuel injector cleaner can sometimes make the situation worse, so it's recommended to consult a specialist or a mechanic before attempting any cleaning methods. Additionally, if your GSXR has multi-hole injectors, be aware that these are more prone to clogging and may require more frequent cleaning.
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Using carb cleaner
Carb cleaner is a cheap and effective way to clean your GSXR fuel injectors. It can be purchased for under $3 at any auto parts store. To clean your injectors with carb cleaner, you will need a few cans of the cleaner, some soft wire brushes, old toothbrushes, a coarse thread screw, and a few gallons of gas or water.
First, remove the tank and then the fuel pump. The fuel pump might be stuck to the tank, but it will pop out if you slide it straight out. Next, remove the three nuts holding the wires to the base, then remove the screw from each side of the fuel pump. Now, separate the top of the pump from the base. There is a rubber o-ring inside that may make this step a little tricky.
Once the pump is separated, you can clean the injector screens with carb cleaner. Be gentle when removing the injector filter, as it is easy to tear the filter's plastic housing. After cleaning, reinstall the injector filter, following the steps provided in a link in the source material.
If your injectors are off the bike, you can use a 9v battery to open and close them while spraying carb cleaner through them. This method was used by a GSXR owner who saw great results, with their bike performing faster than ever after cleaning their completely clogged injectors.
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Ultrasonic cleaning
To clean your GSXR fuel injectors using ultrasonic cleaning, you will need to take them out and bring them to a shop that offers ultrasonic cleaning services. The injectors will be submerged in a special tank filled with an aqueous-based cleaning solution, such as an alkaline detergent. The tank is fitted with ultrasonic transducers that produce high-frequency sound waves, which create cavitation bubbles. These bubbles expand and collapse with immense force, dislodging dirt and other deposits from the injector's surface.
It's important to note that simply placing the injectors in an ultrasonic unit might not effectively clean them internally. To achieve optimal results, the injectors need to be opened and closed while suspended inside the ultrasonic cleaning bath. This allows the sound waves and cleaning solution to penetrate the internal components of the injectors, removing hydrocarbons and deposits. The entire process typically takes around 45 to 60 minutes for thorough cleaning.
When choosing an ultrasonic cleaning service, consider the size and configuration of the ultrasonic unit, as well as the construction materials and manufacturer. It is also essential to ensure that the service uses the correct cleaning solutions and has the necessary equipment and knowledge to properly clean your GSXR fuel injectors.
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Using fuel treatments
Fuel treatments are a popular method for cleaning GSXR fuel injectors. It is recommended to use fuel injector cleaner or a similar product like Chevron's Techron Concentrate Plus, Seafoam, or PJ1 injector cleaner. These products can be run through the bike a few times a year, especially when bringing the bike out of storage or putting it away for winter. It is important to ensure that a few tanks are run through the bike after using the cleaner to ensure it is all out of the system before adding any stabilizers.
Some people opt to use a pressure system with injector cleaner attached to clean the injectors individually. This involves removing the throttle bodies from the motor and hooking them up to the pressure system. Power is then applied to each injector individually until it runs to a super-fine mist. Regular fuel is then pressured through to blow out the cleaner.
Another method is to use a carb cleaner, which is a cheap option at under $3 a can. This can be sprayed through the injectors, or they can be dipped in a carb tank for around 45 minutes. It is important to be gentle when removing the injector filter, as it is easy to tear the filter's plastic housing.
Some people choose to take their injectors to a specialist shop to be cleaned, which can be a good option, especially for ultrasonic cleaning. This is a more expensive option but can be worth the money.
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Frequently asked questions
You can tell your GSXR fuel injectors are clogged if you notice performance issues such as restricted fuel flow, rough idle, engine hesitation, reduced engine power, poor gas mileage, and increased emissions.
There are several ways to clean GSXR fuel injectors. Some people suggest using a fuel injector cleaner, but this can sometimes make the situation worse. Others suggest taking them out and cleaning them manually with carb cleaner, or with petrol and used oils. You can also take them to a Fuel Injection specialty shop where they can be ultrasonically cleaned on a rig.
To prevent your GSXR fuel injectors from clogging, you should include cleaning them as part of your maintenance routine. It is recommended to run injector cleaner through your bike twice a year, once before you put it away for the winter, and once when you take it out.
