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The Injector Shop

GDI Fuel Injectors Testing & Cleaning Service

GDI Fuel Injectors Testing & Cleaning Service


Type: Fuel Injector Flow Testing and Cleaning


Regular price $33.95
Sale price $33.95 Regular price
Sale Sold out
Shipping calculated at checkout.

GDI Fuel Injector Cleaning & OEM High-Pressure Flow Testing

Carbon buildup and contamination can wreck GDI performance. We clean and test GDI injectors using specialized high-pressure equipment and OEM-style flow test plans — so you get real data, not guesswork.

Pricing Note

The service price shown is per injector. Please select the number of injectors you are sending in when placing your order.

Fast Turnaround Typically ~2 business days after receipt
Accurate Results High-pressure GDI testing (not a port bench)
Report Included Clear results for each injector
Free return freight on 4 or more injectors We cover return shipping via UPS Ground when you send 4+ injectors in the same service order.

What This Service Includes

  • Professional cleaning to remove deposits and contamination
  • High-pressure GDI flow testing using OEM-style test plans
  • Spray pattern / performance evaluation based on test results
  • Service parts installed where applicable (filters / seals as required)
  • Results report included for each injector
Why High-Pressure Testing Matters GDI injectors operate at extremely high pressure compared to port injectors. Testing GDI injectors at low pressure can produce misleading results. Our process is built specifically for GDI injectors so your results reflect real operating conditions.

How to Send Your Injectors

  1. Download & print the service form
    Injector Service Form (PDF)
  2. Fill it out with your contact + vehicle details
  3. Package carefully (bag each injector and label if possible)
  4. Ship to The Injector Shop (use your preferred carrier)
  5. We service & test and return with your report
Important Note Cleaning and testing provides accurate performance data, but it does not guarantee an injector will pass. Some injectors fail due to internal wear, leakage, electrical issues, or mechanical damage.

This Service Is Not For

To avoid delays, please confirm your injector type before ordering/shipping.

  • BMW / Mercedes Piezo direct injectors (not serviced on this page)
  • Toyota / Lexus double-seal style injectors (we do not service these)
Not sure what you have? Send us a clear photo of your injector and your vehicle details and we’ll point you in the right direction.

What You’ll Get Back

Cleaned Injectors

Professionally cleaned and prepared for accurate evaluation and re-installation.

High-Pressure Test Results

Data you can trust — based on a process designed for GDI injectors, not low-pressure assumptions.

Clear Next Steps

If an injector fails, you’ll know which one and why — so you can make an informed replacement decision.

* Free return freight applies to 4+ injectors in the same service order and ships back via UPS Ground.

Unpaid Injectors Policy

Injectors that remain unpaid for service, testing, or return shipping will be considered abandoned. Any injectors left unpaid for more than 30 days after service completion become the property of The Injector Shop and may be disposed of or resold at our discretion.

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