Sylvie Willis
Keeping your BMW 335's fuel injectors clean is important for optimal engine performance. While there are DIY methods and products available for cleaning fuel injectors, such as diesel additives, it is recommended to seek professional services for a thorough cleaning and inspection. Online forums and communities offer insights and advice on injector cleaning services and techniques, with some individuals even offering their expertise for a fee. Preventative measures, such as regular maintenance and the use of fuel additives, can help maintain injector health and avoid potential problems down the road.
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What You'll Learn
Fuel injector cleaning kits
Fuel injectors are an essential component of a car's fuel system, and keeping them clean is crucial for optimal engine performance. While some car owners choose to send their injectors out for cleaning or purchase cleaned injectors, others opt for do-it-yourself (DIY) injector cleaning kits. These kits offer a convenient and cost-effective solution for those who enjoy working on their cars or want to save money.
When choosing a fuel injector cleaning kit, it's important to select one that is compatible with your vehicle's specific make and model. Additionally, some kits may be designed for certain types of fuel systems, such as diesel or gasoline engines. Reading reviews and comparing different brands can help you make an informed decision about which kit is right for your needs.
The process of using a fuel injector cleaning kit can vary depending on the kit and your vehicle. In general, it involves removing the injectors from the engine, disassembling them, and then cleaning each component with the provided tools and fluids. Some kits may also include testing and calibration procedures to ensure that the injectors are functioning correctly after cleaning. It is always important to refer to the kit's instructions and your vehicle's service manual for detailed guidance on the cleaning process.
While fuel injector cleaning kits can be a useful option for car enthusiasts and those looking to save on maintenance costs, it's worth noting that injector cleaning is a delicate task. Improper cleaning or reinstallation of injectors can potentially lead to fuel system issues or engine damage. Therefore, it is essential to have a good understanding of fuel injectors and engine mechanics before attempting to clean them yourself.
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Diesel additive to clean the fuel system
While there are services that offer fuel injector cleaning, you can also use a diesel additive to clean the fuel system of your BMW 335.
One user on a BMW forum noted that they always run their car with additives and that their injectors are "clean as a whistle". They also noted that all fuel has additives, and more expensive fuels tend to have more additives, which is why they cost more.
Another user recommended using a two-part cleaning system for diesel, similar to those used for gas cars. One part is poured into the tank, and the other is placed under the hood. This user also recommended Lubro-Moly diesel purge, which can be put into the tank or used with a reservoir made from a fuel line.
Other recommended diesel additives include:
- Millers Power Sport 4
- Diesel Power Ecomax
- Carlube 2 stroke oil
- Techron fuel system cleaner
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Using a vacuum to clean the back of the valve
To clean the back of the valve of your BMW 335 fuel injectors using a vacuum, you will need to understand the basics of a car engine vacuum line. Vacuum will only be present behind the throttle butterfly, so in front of the throttle plate, there will be no vacuum due to the open air box and atmospheric pressure. The amount of vacuum a motor has will depend on the quality of the piston rings and the cam that the motor is running. A good seal from the piston rings is important for a strong vacuum. When running a large and aggressive cam, there will be more overlap in the duration between the intake and exhaust valves, which will cause a loss of vacuum at idle. This loss of vacuum will cause the motor to struggle at low RPMs.
The highest vacuum the motor produces will be found in the intake manifold, which is the area behind the throttle plate. You can use a hand pump or an air compressor to check for vacuum and pressure leaks. Forced induction cars are more prone to vacuum and pressure leaks due to the extra heat, and the additional rubber or silicon hoses that are required. Over time, the heat can cause these hoses to crack, and finding these small cracks can be difficult.
The vacuum pump check valve, also known as a vacuum check valve, is responsible for sealing and holding the vacuum flow to ensure energy-efficient and safe operation. It is typically found at the end of the hose to supply vacuum flow to the intake manifold. You can identify if your vacuum check valve needs to be replaced if your brakes are not working or are less responsive.
To clean the back of the valve using a vacuum, you will need to identify the location of the valve and ensure you have the proper tools to create a vacuum and check for leaks. This process can help remove any debris or buildup on the valve and improve the performance of your fuel injectors.
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Motor vac to clean the fuel system
Yes, you can clean your BMW 335 fuel injectors. One way to do this is by using a MotorVac CarbonClean machine. MotorVac offers a range of fuel system cleaning machines and detergents that can help eliminate carbon buildup and other contaminants from your fuel injectors and intake valves.
The MotorVac CarbonClean MV3 Fuel System Cleaner, for example, uses a super-concentrated detergent to rapidly clean the entire fuel system, including injectors and intake valves. This product gently "steam cleans" internal engine components, removing soft carbon and other harmful contaminants.
Another option is the MotorVac MV5 Pressurized Fuel System Cleaner, which is also designed to clean fuel injectors. This product uses a pressurized detergent to quickly and effectively clean the fuel system.
In addition to these products, MotorVac also offers a range of other fuel system cleaning solutions, such as the MotorVac CarbonClean 1000 Fuel System Cleaning and Decarbonizing Service Machine, and the MotorVac IDT 4000 DieselTune 4000 Complete Diesel System Service, which is safe for use in all diesel engines.
There are also alternative methods to clean your fuel injectors. Some people choose to send their injectors out for professional cleaning services, which can be found through online forums or local auto shops. Others prefer to use diesel additives or diesel purge products that can be poured directly into the fuel tank or run through the engine with a separate reservoir. These additives are designed to clean the fuel system and can be an effective way to maintain the health of your fuel injectors.
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Sending injectors for professional cleaning
If you're unsure about cleaning your BMW 335 fuel injectors yourself, you can always send them off for professional cleaning. There are a number of companies that offer this service, such as Injector Rx and Fuel Injector Clinic. The process is relatively straightforward and can be done by following a few simple steps.
First, you'll need to remove the fuel injectors from your BMW 335. This can be a tricky process, so if you're not comfortable doing it yourself, you can always take it to a mechanic or a specialist. Once you have the injectors removed, you'll need to package them securely for shipping. Make sure they are clean, dry, and carefully packed to avoid any damage during transit.
Next, you'll need to fill out a service form provided by the company you choose to work with. This form will include important information such as your contact details and the services you require. Some companies might also require you to include specific information about your vehicle, such as the make, model, and year. It is important to be as detailed as possible in this form to ensure accurate servicing.
After filling out the form, place it in the package with your fuel injectors and send it off to the company. Most companies offer standard and expedited shipping options, so you can choose the one that best suits your needs and budget. Once they receive your package, they will typically send you a confirmation email and provide you with a service queue number for reference.
The company will then proceed to clean and service your fuel injectors using their specialised processes. This usually involves ultrasonic cleaning, flow testing, and, in some cases, rebuilding the injectors to restore them to like-new condition. They may also offer additional services, such as replacing seals, filters, and pintle caps, to ensure optimal performance.
Finally, once the cleaning and servicing are completed, your fuel injectors will be shipped back to you. Most companies provide return shipping with insurance and tracking, although the customer typically covers the return shipping charges. You will also receive a detailed flow data sheet containing information from the initial and post-cleaning tests, allowing you to see the improvement in your fuel injectors' performance.
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Frequently asked questions
You can clean your fuel injectors by sending them off to companies such as RC Engineering or BMWStone, or you can attempt to clean them yourself by purchasing a fuel injector cleaning kit.
The cost of cleaning your BMW 335 fuel injectors varies depending on the company you choose to clean them. Some companies offer free injector cleaning and testing, while others charge $10 per injector.
Yes, a good way to prevent injector problems is to add a 2-micron secondary fuel filter. Filtration is key to removing this problem. You can also run some diesel additive through the tank to clean up the fuel system.
