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 mustdo 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?

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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

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