Redline Injectors

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

Port Injector Cleaning And Flow Testing Service

Port, TBI, CIS Fuel Injector Cleaning And Testing Overview

  • Traditional cleaning methods dating back to 1989, use mostly water and lightly dissolve tip deposits, leaving stubborn internal buildup and restrictions untouched. At Redline Injectors, we do things differently as we outline below.
  • As part of our standard premium service, you will receive new fuel injector components, including O-rings, filters, seals, spacers and combustion seals, with OEM options generally available for all injector types.
  • Restore maximum power and OEM-level performance with our injector service. Where compromise ends, premium begins. Don’t settle for less, go with Redline Injectors!
Service Price Guide Click Here to Order
What To Expect: Port Fuel Injector Service | Port Injector Cleaning And Flow Testing Service | Redline Injectors

What To Expect: Port Fuel Injector Service

  • Our premium fuel injector proprietary cleaning along with flow testing includes comprehensive static and dynamic flow testing performed both before and after cleaning.
  • You will receive new fuel injector components, including filters, O-rings, seals, caps, grommets, clips, spacers, decouplers, clamps, ferrules, caps, hoses or combustion seals, with OEM options generally available for all injector types.
  • If an injector fails our preliminary or electrical inspection or basic function tests before cleaning and subsequent testing, we will notify you of the issue a full refund that injectors service cost.
  • Some older top feed injectors are painted with spray paint, some of that paint may come off during the cleaning process, we do not repaint injectors as it is cosmetic, customers can repaint as desired. If you wish us to strip painted injectors let us know and we can light media blast them down to bare metal at no charge.
  • Sample Port Injector report can be found here.
Port Injector Specific Test Benches | Port Injector Cleaning And Flow Testing Service | Redline Injectors

Port 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 as well as Electrical Resistance, Short Circuit & Open Circuit Test.
The Correct Test Bench

Dynamic and Static Injector Testing

Static injector flow refers to the fuel flow rate when the injector is held fully open, while dynamic injector flow measures the flow rate during pulsed operation, simulating real-world engine conditions. Our port injector flow testing always includes both types of tests when applicable to the specific injector model. Some injectors, such as E-TEC, do not support static tests as an example. Here’s a more detailed explanation:

Static Flow

  • This is the flow rate when the injector is energized and held open continuously (100% duty cycle).
  • It’s a simple measurement of the maximum output of the injector at a given pressure.
  • Static flow is often used as a benchmark for injector capacity and is commonly expressed in units like lbs/hr or cc/min.
  • Static flow output volume is generally much higher than dynamic flow since it operates like an open hose with unrestricted flow.

Dynamic Flow

  • This measures the fuel flow rate when the injector is pulsed on and off, simulating the way injectors operate in a running engine.
  • Dynamic flow is influenced by factors like pulse width (the time the injector is open during a pulse) and pulse frequency (the number of pulses per second).
  • Dynamic flow testing is crucial for understanding how injectors perform under real-world operating conditions, including idling, acceleration, and deceleration.
  • Dynamic flow is sometimes expressed in duty cycles, which is the percentage of time the injector is turned on during a pulse period.
Heated Calibration Fluid | Port Injector Cleaning And Flow Testing Service | Redline Injectors

Heated Calibration Fluid

  • We use the latest Carbon Zapp GS8 for all port fuel injector flow testing to determine if they are flowing within the required tolerances as well as electrical resistance, short circuit & open circuit test.
  • Our test 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 on injectors that support both. Depending on the injector type, we warm them for 2–4 minutes as well as performing testing at that temperature as well. For most injectors, the dynamic test consists of a full 60-second run to ensure a proper sample.
  • For direct injectors, our GDR-x computer-controlled test bench preheats both the test fluid and the injector for up to five minutes prior to testing as part of the test protocol.
Why Fluid Temperature Matters
Service Exclusions | Port Injector Cleaning And Flow Testing Service | Redline Injectors

Service Exclusions

  • ​We do not service Diesel, CPI/SCPI Spider, FICHT injectors or Flux Capacitors.
  • See our Injector Type Page for visual references
Injector ID

Key Topics For Fuel Injectors

How Do Fuel Injectors Work?

Fuel injectors play a critical role in modern internal combustion engines by delivering fuel to the combustion chamber in a precise and controlled manner. They are part of the fuel injection system, which replaces older carburetor systems.
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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 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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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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CIS Injectors Explained: Bosch K-Jetronic Fuel System Guide

Let’s drive into the world of vintage Bosch fuel injection systems and understand what are CIS Injectors. Let’s break it down: Overview Bosch developed several major types of early electronic...
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How To Determine What Kind Of Injector You Have

Here’s a quick guide to identify what kind of injectors you have. Or, if you prefer, you can just check out our visual reference page found below. Click the page...
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Shipping and Service FAQs

Service Related Questions

Yes, we have a 2 injector minimum.

Absolutely! Rest assured that we will take care of removing the injectors for you for (typically GDI and side feed) and invoice you for a bench fee of $10 per rail to do the work as problems can often arise. However, it’s important to note that we cannot be held responsible for any potential damage that may occur during the removal process. To ensure a smooth experience, we recommend that you personally remove the injectors from the rail.

To avoid any issues with shipping service secure them in plastic and tape them to prevent leaks.

For your convenience, side feed injectors will be re-installed in the fuel rails, top feed and GDI injectors will be packaged separately. GDI Injector clips are fairly easy to remove, you should not have no any issues, but if yours are tricky to remove we will can do it if you wish.

  • Service prices and options are posted in store per item type as well as on the pricing page. Service Pricing
  • Please check the Injector id injectors page on the menu if your unsure what you have. Injector ID

Turn around times are stated on the Home page.

We always replace filters, O-rings, seals, spacers, grommets etc. whenever they are available for the injector, this includes side feed injectors as opposed to cleaning them while still on the injector as most places do. They become fragile over time, why take a risk.

In fact we replace everything that is replicable.

Shipping Related Questions

For local drop/pick up service check the “Local Drop-Off” box on the order form.

Once order is places, email us at [email protected] for drop off instructions.

  • Shipping insurance up to $100 is automatically provided.
  • To add Shipping additional Insurance, please select amount coverage you’d like using the “Shipping Insurance” line item before checkout.
  • Additional shipping insurance is calculated for you based on $1.60 per $100 of declared value.
  • Please insure items based on their actual replacement value, extra insurance above the value will accomplish nothing, claims are on shipment value, not amount of insurance bought.
  • Insurance applies only to the item we’re returning to you.

Yes we will email the contact on the “Order receipt” that we get a copy of when you place your order.  Include your Name on a card or paper inside the shipment box as the shipping label sometimes gets obscured.

Include your Name on a card or paper inside the shipment box as the shipping label sometimes gets obscured.

We accept shipments from UPS, USPS, Fedex or DHL to following address 7 days a week.

Sending UPS is the optimal choice within the US, however.

Redline Injectors
3036 State Route 35 #227
Hazlet, NJ 07730

Include your Name on a card or paper inside the shipment box as the shipping label sometimes gets obscured.

​When preparing the injectors for shipping, it is strongly advised to place them inside a regular zip lock bag first. This will help to keep the fuel smell contained. It is important to avoid any damage during transit, so make sure not to simply toss the bag into a box without any additional packing material. This is particularly crucial for the pintle end.

It is not recommended to ship the injectors in a bubble envelope. Optimal protection can be achieved by using a box with some padding or a bubble envelope in a box. The small flat rate box from the Post Office may be good budget-friendly option for smaller injectors.

Send the injectors with all O-rings and related components, either installed on the injectors or placed together in a bag.

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Send Us Your Injectors