Does this Intake Valve Cleaner Really Work? Proof, Before & After / Clean carbon from intake valves

Does this intake valve cleaner really work? I show proof before & after using the CRC intake valve cleaner to clean carbon from intake valves on the 2017 Accord which a GDI engine. Cleaning carbon from intake valves is must-do maintenance on GDI engines. A GDI intake valve cleaner is very attractive since it doesn't require disassembly for walnut blasting, however, do intake valve cleaners really work or is disassembly a must for removing carbon deposits from intake valves in GDI engine? Get from Amazon: - Depstech Dual Lens Wireless Endoscope: https://amzn.to/3kxDIoW - CRC intake valve cleaner - https://amzn.to/3Aow1Zx - Tools & products I recommend - https://amzn.to/42LGCL8 I may earn a small commission from a purchase made through the links above. This does not increase the price you pay in any way. Timestamps: 0:00 - Intro 0:36 - Intake valves before 1:21 - Cleaning procedure 2:23 - Spirited drive 3:12 - Intake valves after 3:52 - Final take #carboncleaning #intakevalve #diyautoworksng #diymechanic #diycarrepair #tuneup