It is a special machine for engine Intake pipe and intake valve back side clean. This is a closed loop. Walnut powder will impact carbon deposition on inner wall of intake pipe. After thousands of impact, carbon deposition will be clear thoroughly.
Automotive Engine Intake Pipe Valve Clean Machine Valvetronic System Walnut P...
AUTOOL HTS558 Automotive Engine Intake Pipe Valve Clean Machine Carbon Deposit T
Engine Intake Pipe Valve Walnut Sand Clean Machine+23PCS Walnut Blaster Adapters
Car Engine Intake Pipe Valve Cleaning Machine Walnut Sand Blaster Carbon Cleaner
Walnut Sand Blaster Machine Engine Intake Pipe Valve Cleaner Carbon Deposition
AUTOOL HTS558 Sand Blastser Engine Intake Pipe Valve Decarbon Cleaning Machine