[Traylaw]

Hello,
For my 2017 crv, I'm trying to locate an intake line (vacuum line) in order to do an intake valve clean with CRC). I saw this photo and I'm not sure which line goes directly to the intake.
Any help?
Thanks

#3 is the PCV line to the intake manifold.

 

[Traylaw]

Ummm, so this is what I should use? (Sorry for my ignorance)

Yes, if you inject an appropriate cleaner there it will reach the intake valves. But as mentioned previously there is little reason to inject anything in the intake manifold because Honda did a good job with their 1.5L turbo GDI engine to prevent carbon build up on the intake valves. No one to my knowledge has reported any issue with carbon build up in either the Civic or CRV forums. While there may be other issues which I won't get into, but carbon build up is not one of them.