Anyone can explain how the "yellow" hose works? it seems to be 2 hose stack together in the middle. What connection is it and how is it works? Like where the vacuum flow inside those hose?
The reason I asked, I needed vacuum hose to inject "CRC valve intake clearner", could I inject via point "B" of the yellow hose without any issue to brake booster?
Thanks!
If you need to inject a cleaner, and don't need to drive it at all for that process, then I would remove the pipe labelled A and find a short length of temporary pipe to fit to the throttle body in place of the pipe labelled A to use to inject the cleaner.
It is also good practice to plug the open end of pipe A while doing this work.
Once cleaning is done then remove the temporary pipe and refit pipe A, making sure to remove the blanking plug / material.
Edited based on the valid comment of Paulster2, thanks.
