Mercedes Mullins
If you're looking to remove the fuel injectors from your 07 GSXR 1000, it's likely that they are clogged and need to be cleaned or replaced. While cleaning injectors is not a simple task for most home mechanics, there are a few options for removing them. Firstly, you could try using an impact driver to break free the fuel rails screws, which can be difficult to remove. Once removed, you can clean the injectors with a spray carburetor cleaner or take them to a specialty injector service company for professional cleaning.
How to remove fuel injectors from a 07 GSXR 1000
| Characteristics | Values |
|---|---|
| Tools required | Allen key, air compressor, alligator clip and battery, paper clip, carburetor cleaner, impact driver |
| Steps | 1. Remove the gas tank, air box, and throttle cables. 2. Unplug the wiring harness from the injectors, throttle position sensor, and secondary throttle valve actuators. 3. Loosen the four Allen screws that clamp the throttle body onto the crankcase and remove the throttle body. 4. Take off the fuel delivery pipes and the injectors. 5. Clean the injectors with a spray-type carburetor cleaner. 6. Blow dry with an air compressor. |
| Notes | Fuel injector cleaner may not be effective and can sometimes make the situation worse. It is recommended to get the injectors professionally cleaned. |
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What You'll Learn
Removing the gas tank, air box, and throttle cables
To remove the gas tank, air box, and throttle cables from a 07 GSXR 1000, follow these steps:
Removing the gas tank:
Firstly, identify the four pipes coming from the tank. Two of these pipes are on the diaphragm tap: one is a fuel line going to the carbs, and the other is a vacuum line coming from the carbs, which opens the diaphragm to allow fuel flow. The remaining two pipes are vent pipes that run down the right-hand side of the engine by the frame. Once you have located and identified these pipes, you can start to detach them and remove the gas tank.
Removing the air box:
There are a couple of hoses you need to remove to detach the air box. One hose is located at the front-right, and the other is at the back-left. To release the hoses, you need to locate and squeeze a clip. Additionally, there may be some screws that need to be removed to completely detach the air box.
Removing the throttle cables:
To remove the throttle cables, start by locating the cables right below the switch. Loosen the adjustment on these cables, and then go into the switch to remove them. Be careful, as these parts are made of plastic and can be damaged if too much force is applied. Once the cables are loose, follow them to the throttle body and loosen them there as well. This should give you enough slack to pull the throttle cables out of the cam on the throttle tube.
By following these steps, you can successfully remove the gas tank, air box, and throttle cables from your 07 GSXR 1000.
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Unplugging the wiring harness
To unplug the wiring harness, you will need to remove the gas tank, airbox, and throttle cables. This will give you access to the wiring harness, which is connected to the injectors, throttle position sensor, and secondary throttle valve actuators. All of these connectors are on the throttle body.
Once you have located the wiring harness, you will need to carefully unplug it from the various components it is connected to. Start by disconnecting it from the injectors. Then, unplug it from the throttle position sensor and secondary throttle valve actuators. Be gentle, as these connectors can be delicate.
It is important to note that the fuel rails screws can be challenging to remove. They are typically very tight, and it is best to attempt removal while the engine is hot, as this will expand the aluminum casting of the throttle body. An impact driver can also be used to help break them free.
After unplugging the wiring harness from all the necessary components, you should be able to loosen and remove the Allen screws that clamp the throttle body onto the crankcase. You can then pull the throttle body up and off the bike with some firm force.
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Removing the throttle body
To remove the throttle body of a 2007 GSXR 1000, you will need to follow the steps outlined below:
Firstly, remove the side cowlings and the air cleaner box. Refer to your GSXR 1000 service manual for detailed instructions on these steps. Next, place a rag under the fuel feed hose and disconnect it from the fuel pump. This will prevent any fuel spillage. Loosen the throttle body clamp screws on both the left and right sides. Now, lift up the throttle body from the intake pipes. You may need to wiggle it back and forth and pull up with some force to detach it completely.
Once the throttle body is lifted, proceed to disconnect the sensors and cables. These include the STP sensor coupler, TP sensor coupler, and throttle cables. With these disconnected, you should now be able to remove the throttle body entirely.
It is important to note that the installation process is simply the reverse of the removal. When reinstalling, pay attention to connecting the primary and secondary injector couplers to their respective fuel injectors.
Some additional tips for throttle body removal include:
- Adjusting the throttle cable play by referring to the instructions in section 0b of the service manual.
- Cleaning the throttle body and injectors with a spray-type carburetor cleaner. Do not use abrasive tools or brushes.
- Cleaning the throttle plates and treating the fuel with Gumout before riding for a few hundred miles.
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Taking off the fuel delivery pipes
To take off the fuel delivery pipes, you will need to first remove the gas tank, airbox, and throttle cables. You should then unplug the wiring harness from the injectors, throttle position sensor, and secondary throttle valve actuators. All connectors should be removed from the throttle body.
There are four Allen screws that clamp the throttle body onto the crankcase. Loosen these with an Allen key and pull up with some force to remove the throttle body. From there, you can take off the fuel delivery pipes.
It is important to note that the fuel rails screws can be very difficult to remove. It is recommended to do this while the engine is hot to expand the aluminum casting of the throttle body. An impact driver can also help break them free.
Once the fuel delivery pipes are removed, you can clean the injectors with a spray-type carburetor cleaner. Do not use a wire brush or anything abrasive. Blow-dry the parts with an air compressor and then put everything back together.
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Cleaning the injectors
Identifying Clogged Injectors:
Before cleaning, it is essential to determine if the injectors are indeed clogged. Some symptoms of clogged injectors include restricted fuel flow, rough idle, engine hesitation, reduced engine power, poor gas mileage, and increased emissions. These issues can also be caused by a clogged fuel filter, so it is worth checking and replacing the fuel filter before assuming the injectors are at fault.
Fuel Injector Cleaners:
One method to clean fuel injectors is to use a fuel injector cleaner. It is recommended to run injector cleaner through the bike twice a year, especially before and after storing it for the winter. Popular injector cleaners include Chevron's TECHRON CONCENTRATE PLUS, PJ1 injector cleaner, Seafoam, and Lucas Fuel Injection cleaner. However, some riders caution that fuel injector cleaners can sometimes worsen the problem or cause issues with spark plug wear.
Manual Cleaning:
If the injector cleaner does not resolve the issue, the next step is to manually clean the injectors. This involves removing the injectors from the bike and either cleaning them by hand or taking them to a Fuel Injection specialty shop, where they have the equipment to thoroughly clean and balance the injectors.
Ultrasonic Cleaning:
For more severe cases of clogging, ultrasonic cleaning is an option. This method involves sending the injectors to an EFI (Electronic Fuel Injection) shop, where they will use ultrasonic technology to clean the injectors on a specialized rig. This process can be more expensive but is often worth the money to ensure the injectors are thoroughly cleaned and balanced.
Preventative Measures:
To prevent future clogging, it is recommended to use fuel treatments or additives regularly. Polyether amine fuel cleaning products like BG 44K or Techron can help keep the injectors clean and functioning optimally. Additionally, ensuring proper storage conditions for the bike can reduce the likelihood of clogging, especially for later models of the GSXR with multi-hole injectors that are more prone to clogging.
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Frequently asked questions
Performance issues such as restricted fuel flow, rough idle, engine hesitation, reduced engine power, poor gas mileage, and increased emissions are all signs of clogged injectors.
First, remove the gas tank, air box, and throttle cables. Then, unplug the wiring harness from the injectors, throttle position sensor, and secondary throttle valve actuators. Loosen the Allen screws that clamp the throttle body onto the crank case and pull it up with some force. From there, take off the fuel delivery pipes and the injectors.
You can either clean them yourself with a spray carburetor cleaner or take them to a specialty injector service company.
