DIY: How To Clean 7th Injector / Doser Nozzle On A Freightliner Cascadia DD15

This video demonstrates how to clean the diesel doser injector, commonly referred to as the “7th injector.” If you’ve been experiencing low NOx efficiency issues, this quick 5-minute process is something that can help with the issue or prevent some confused engine code. It’s a simple and easy task, suitable for anyone, and can serve as a beneficial preventative maintenance step.
Before you start, it’s important to check with your dealer to see if you have a gasket you may need to replace.
Supplies you’ll need are:
• 9/16 and 1/2 wrench
• Size 12 socket, ratchet, and swivel extension
• Tube brush (BRASS ONLY)
• Soft brush (for cleaning injector head)
• Shop towels”
If you have
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[@Truckingadvocate]

Thanks for sharing brother! Be safe out there

[@brianstarr1160]

Working on mine now fingers crossed ty for you video

[@kennull3873]

What year is your Cascadia?

[@cervantestrucking8165]

What code did you get,4364 spn