Premium E-TEC Injector Cleaning And Flow Testing

Redline Injectors are the industry specialists for E-TEC injector cleaning and testing, using proprietary tools, chemicals, and methods. We service marine, snowmobile, and UTV E-TEC injectors commonly found in Ski-Doo and Evinrude engines among others. If your engine struggles to start, idles roughly, misfires, bogs or emits fuel odor, it may be time for cleaning.

• While not required, we recommend depinning the Evinrude coils if your outboard engine has the E-TEC 3 pin connectors, and sending the injectors without the coils attached. Your shipping will double with them attached. Click this link for instructions on how to de-pin.
• Many shops charge a similar price, but do not include full set of new replacement parts.
• View our Port Injector page for service procedures.

Scroll toward the bottom to view our “E-TEC Troubleshooting Guide” section.

As of Mar 2026 we use the following.

Evinrude E-TEC Injector and Fuel Line O-Rings

• We use use Brown Viton E-TEC top internal injector O-Ring.
• We use Black Viton E-TEC fuel line O-Rings.
• We use Black Viton E-TEC lower internal injector O-Ring.

Ski-Doo E-TEC Injector and Fuel Line O-Rings

• We now use Blue Fluorosilicone E-TEC top internal injector O-Ring.
• We now use Blue Fluorosilicone E-TEC fuel line O-Rings.
• We now use Black Viton E-TEC lower internal injector O-Ring.

*There is an additional charge for the Ski-Doo Fluorosilicone O-rings, as we purchase them directly rather than having them manufactured for us.

The Evinrude Fuel Injector Seal Kit (5007017) no longer includes the filter. Replacement kits from offshore vendors often fail to meet quality standards; the filters are loose and sag compromising filtration and causing pintle clogs and reduced performance. If your parts didn’t come in a NOS Evinrude bag, their quality is questionable.

That’s why we design and manufacture our own high-quality E-TEC filters, O-rings, and crush rings for use with our E-TEC Injector service. With over 5,000 proprietary kits in stock, we include our premium parts as part of our service; reducing costs to what competitors charge for cleaning alone.

eBay kits from third-party resellers come from the same low-quality supplier used by other shops—they don’t match the fit or performance of our proprietary kits.

click the links below for more information.

• Redline Injectors E-TEC Filter Manufacturing
• Proprietary E-TEC Testing Manifold Plate
• E-TEC Pintle Puller & Press

• Mark each injector with its cylinder number using a Sharpie and masking tape tag or something similar. We will tag the injectors with plastic tags using your provided number.
• Reinstalling injectors in their original positions ensures the EMM uses the correct coefficient file that is set for the injector and cylinder. Tracking and reinstalling injectors correctly is essential for optimal functionality.

The E-TEC injector is essentially a pump, and each unit is tested after manufacture to determine its precise fuel delivery. This produces a coefficient file unique to that injector, which must be uploaded to the Engine Management Module (EMM). The code tells the EMM if a specific injector flows slightly more or less than the baseline so it can adjust the pulse width (opening time) accordingly.  That’s it, there is no magic to it. 

When replacing an injector, if you want to update the EMM for the specific replacement injector coefficients, the QR codes on injectors provide these values, but they reflect a new injector and don’t account for wear. Dealer-supplied injector coefficients typically include coefficient files adjusted for age and usage.

Click the button to view instructions for updating E-TEC EMM injector coefficients.

• Essential for Ski-Doo and Evinrude engines after fuel injector cleaning if there’s any doubt about an injector or cylinder;  replace the spark plug with a new one, install another new plug in a known good (non-suspect) cylinder, and then compare the two. See the guide below for more information.
• Learn how to read spark plugs to accurately assess your engine’s condition. This guide covers normal, lean/overheating, and rich/oily readings for both 2-stroke and 4-stroke engines, helping you diagnose fuel mixture, combustion efficiency, and potential mechanical issues.
• Understand porcelain color, electrode deposits, and other key indicators to keep your engine running at peak performance. Perfect for mechanics, enthusiasts, and DIYers looking to optimize engine health.

Use our handy Evinrude and Ski-Doo troubleshooting guides as a helpful starting point if needed.