How to Clean Diesel Injectors

Content:

Why Clean Injectors?

Diesel injectors deliver fuel into the combustion chamber. When they clog, you’ll notice hard starts, rough idle, smoke, and reduced power.

Cleaning Options

  1. Injector Cleaner Additives – Fuel system cleaners added to diesel fuel.

  2. On-Car Cleaning Kits – Connect directly to the fuel rail to clean while the engine runs.

  3. Professional Ultrasonic Cleaning – Shop removes injectors for deep cleaning.

Step-by-Step DIY Cleaning

  • Add injector cleaner to a near-empty fuel tank

  • Fill with diesel

  • Drive for 30–50 miles to circulate

  • Repeat every 10k–15k miles

👉 For persistent injector issues, use our diagnostic laptops to monitor injector balance rates.

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