How to Clean 6.7 Cummins Turbo Without Removing Easily

If you're noticing your truck feels a bit sluggish or your exhaust brake isn't biting like it used to, you're probably looking for how to clean 6.7 Cummins turbo without removing the entire heavy assembly from your engine bay. Let's be real: pulling a turbo is a massive pain. It involves wrestling with rusty bolts, draining coolant, and spending a whole Saturday covered in grease. Luckily, these Holset VGT (Variable Geometry Turbo) units are known for soot buildup, but they also have a few "shortcuts" for cleaning that don't involve a complete teardown. ...

February 5, 2026 · 7 min · Frazier Barreneche