Redline Injectors

Premium Fuel Injector Cleaning, Injector Flow Testing, & Ultrasonic Fuel Rail Cleaning

Fuel Injector Cleaning and Testing

Premium Fuel Injector Service Procedures

Redline Injectors offers Injector Cleaning Service for all vehicle types from motorcycle to marine and everything in-between. We have invested in proprietary chemicals, tooling and custom machines to set a new standard in injector cleaning. All parts are included without hidden fees or charges.

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Our Fuel Injector Cleaning and Testing Procedures

Auto

Marine

Motorcycle

Snowmobile

Off-Road

Injector Specific Test Benches | Fuel Injector Cleaning and Testing | Redline Injectors

Injector Specific Test Benches

  • Port and Throttle body type injector testing is performed on our Carbon Zapp GS8 Port injector test bench supporting pressures up to 95 PSI. Our test bench bench has been upgraded to run temperature-controlled calibration fluid, maintained at 75°–80°F for consistent, repeatable results. Our standard port injector flow testing always include BOTH Static and Dynamic tests for injectors that support both.
  • Port Injectors are flow-tested to evaluate performance, checking for leaks, blockages, spray pattern issues, and volume accuracy.
  • Direct Injectors testing is performed on our Carbon Zapp GDR-X computer-controlled test bench, which supports pressures up to 5,000 PSI and includes both injector and calibration fluid heating capabilities.
  • Direct Injectors are flow-tested using OEM-style drivers capable of accurately measuring volume of fuel injected into an engine cylinder during a single injection event as well as Nozzle response time, leaks, blockages accurately.
Injector Electrical and Functional Mechanical Testing | Fuel Injector Cleaning and Testing | Redline Injectors

Injector Electrical and Functional Mechanical Testing

  • We perform a basic electrical and pulse checks on each injector before beginning service using Multimeter. For high voltage injectors we additionally perform additional electrical insulation tests using a Megohmmeter. We perform electrical resistance, short circuit, open circuit, capacitance and inductance tests depending on injector type.
  • If an injector is found to be permanently defective BEFORE we begin cleaning and testing, we will not proceed with the service. Instead, we’ll issue a refund for the injector’s service cost, there is a $0 bench fee.
Proprietary Fuel Injector Cleaning Solvents | Fuel Injector Cleaning and Testing | Redline Injectors

Proprietary Fuel Injector Cleaning Solvents

  •  Outdated, water-heavy injector cleaners (often 85% water) have dominated the industry since the late 1980s. We actually source a selection of true laboratory-grade chemicals from Lab Alley and custom-mix them in-house for injector specific cleaning applications. We DO NOT use anything from auto parts stores like other shops.
  • Our proprietary TrueFlow solvent is 100% waterless, using a 100% blend of polar and non-polar solvents. Commercially available injector cleaning solvents like ASNU’s contain only 3–5% active solvent, with the rest made up of distilled water, emulsifiers and surfactants; similar to fabric softeners; per their own SDS disclosures available on-line.
  • Our TrueFlow features a high-strength formulation: 30% carbon and varnish solvents, 60% petroleum-based degreasers and carbon removers, and 10% additional secret sauce. It is safe for injector coils and electronics, yet aggressive enough to dissolve carbon and varnish on contact. Its effectiveness comes from a rare balance of high surface tension, low viscosity, and slow evaporation.
  • You don’t need multiple ultrasonic tanks of water based cleaning solution, what’s needed is a much better cleaning solution and frankly… better Ultrasonic Machines.
Injector Exterior Ultrasonic Cleaning | Fuel Injector Cleaning and Testing | Redline Injectors

Injector Exterior Ultrasonic Cleaning

  • The injectors exterior is ultrasonically cleaned in a mild 90 degree solvent for a few minutes to remove external contaminants to prevent cross contamination. A low-pressure air flush clears any remaining solution.
Air Injected Cleaning | Fuel Injector Cleaning and Testing | Redline Injectors

Air Injected Cleaning

  • Traditional cleaning techniques rely on ultrasonic batch cleaning of the injector tip. While this can be effective for the tips, it does not address contamination within the internals of the fuel injector.
  • Stubborn injectors demand more than standard ultrasonic fuel injector cleaner; no matter how many tanks are used. To address this, we engineered a proprietary internal tip bench, designed in CAD and CNC-machined from billet 6061 aluminum. Injectors are secured in custom billet collets and submerged in a specialized chemical blend unique to this bench, as water-based ultrasonics proved ineffective for severe contamination.
  • Using low pressure air with specialized 20cc injector fluid feeder tubes we had designed (not shown), we flow our proprietary injector safe TrueFlow solvent while the injector is pulsed, ensuring solvent penetration from the top all the way down to the tip. The solvent quickly dissolves an injectors internal and external petroleum-based deposits; such as carbon, varnish, and lacquer; allowing the contaminants to be further broken up ultrasonically and the injector completely flushed clean using our Ultrasonic process.
  • After several minutes of pulsing, the process is completed with a high-pressure air flush and the injector is ready for injector specific ultrasonic tip cleaning.
  • *Not every injector is eligible to receive this treatment.
Proprietary Ultrasonic Cleaning | Fuel Injector Cleaning and Testing | Redline Injectors

Proprietary Ultrasonic Cleaning

  • Every injector receives this treatment at a minimum. We created an ultrasonic process using our proprietary TrueFlow waterless detergent blend of 100% polar and non-polar petroleum based solvents. Water based cleaners in ultrasonic tanks proved wholly ineffective for truly stubborn injectors.
  • We spent months developing this method with rigorous testing along with CAD modeling and precision CNC manufacturing of our ultrasonic plates and injector-specific adapters for our Elma ultrasonic machines. Although our fuel injector cleaning process is many times more costly and time consuming than traditional methods, the results proved to be well worth it.
  • Some older top feed injectors are painted with spray paint, some of that paint may come off during this stage of the cleaning process, we do not repaint injectors as it is cosmetic, customers can repaint as desired.
Ultrasonic Cleaners
Standard Injector Backflush | Fuel Injector Cleaning and Testing | Redline Injectors

Standard Injector Backflush

  • Every top-feed, side-feed , and GDI injector and Piezo Injector receives this baseline treatment. We designed and machined custom adapter nozzles specifically for the Carbon Zapp GS8 test bench to accommodate every injector type the bench does not natively support. Heated N-Heptane is pressurized and backflushed through the injector while pulsed to remove loosened debris from previous steps. When combined with our air injected internal tip bench and ultrasonic cleaning using our TrueFlow solvent, this step often resolves performance issues. If problems persist, we proceed with our proprietary nuclear option, the POWERFLUSH procedure.
POWERFLUSH Fuel Injector Reverse Cleaner | Fountain Head Asset Management

POWERFLUSH Fuel Injector Reverse Cleaner

  • Our POWERFLUSH system was CAD-designed and CNC-machined from billet 6061 aluminum by our machine shop partners. It uses a regulated high-pressure Weldon pump with multi-stage 5-micron filtration, a proprietary electronics cabinet for safe injector control, and a fixture plate with interchangeable collets and cups to accommodate various injector types.
  • Not every injector requires every procedure. However, when problem injectors persist after standard fuel injector cleaning, we perform an additional high-pressure reverse-flow cleaning, our proprietary POWERFLUSH treatment. Injectors are removed from the test bench, and TrueFlow solvent is forced backward through them at high pressure for up to 10 minutes. This extended reverse flush removes stubborn varnish, gum, and debris through the injector’s intake, while the reverse-flow method keeps injectors cool and safely powered open for thorough cleaning.
  • We utilize the same TrueFlow solvent blend and temperature controlled to 85°F for additional cleaning effect.
  • On occasions an injector still shows issues at this stage, it is mechanical fatigue or wear.
  • Nearly all port and direct injectors are suitable for this powered detergent reverse-flush process. However, we make it a mandatory step for virtually all direct injectors.

Key Topics For Fuel Injectors

Importance Of Testing Fluid Temperature

When using n-Heptane as as example for a calibration fluid for fuel injector testing, temperature has a measurable and repeatable effect on flow; often more pronounced and predictable than pump...
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What are differences between Port and GDI Injectors?

Port injectors and GDI (Gasoline Direct Injection) injectors are two different types of fuel injectors used in modern internal combustion engines. The main differences between them lie in the way they deliver fuel to the engine, their position relative to the intake system, and their function in the combustion process.
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Difference Between Dynamic and Static Injector Testing

For Port Fuel injectors there are 2 types of testing, Dynamic and Static. Static injector flow refers to the fuel flow rate when the injector is held fully open, while...
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What are Signs of Clogged Fuel Injectors and How to Fix Them?

Clogged fuel injectors can lead to several performance issues in your vehicle, as they play a critical role in delivering the right amount of fuel to the engine for combustion....
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How often should I have fuel injectors cleaned and why?

Port, TBI, GDI and Piezo Fuel injectors should generally be professionally cleaned according to the guide below. At home and in-engine treatments can sometimes cause more problems than they solve....
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How To Test Fuel Injector Coils

When testing fuel injector coils, there are two primary methods: a resistance check and an insulation check. However, insulation testing applies only to piezoelectric injectors; it cannot be performed on...
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