Tearing My Hair Out W This Vacumn Leak Sound

Ok, guys. So a while back. I posted a video of my truck that made vacuum leak sounds every time I revved the engine or when accelerating. When I read it w my OBD2, it said my air purge solenoid was bad. Now after having my engine idling for a while (or driving), that solenoid would start clicking constantly so I figured maybe it was bad and was staying closed, causing the vacuum leak sound. So I replaced that and that code went away but now my mass airflow sensor is throwing codes. *By the way, the vacuum leak sound is still there when accelerating and my air purge solenoid still starts clicking again after idling for a while(5 minutes or so). I also found what hose is making the vacuum leak sound because when I would pinch the line while revving. It would squeak louder and you could actually feel it. This hose is connected to the air purge solenoid and you could also feel the clicking of the purge solenoid through the vacuum hose when pinching it. I'm pinching the hose in the video and you can hear the clicking of the solenoid in the beginning and can hear the "pshhh, pshhh" vacuum leak sound when I rev the engine.https://youtu.be/fIrlz0g2ifU Now my question is. Could the mass airflow sensor be what caused the whole thing? Remember, it didn't throw codes the first time. I'd hate to replace that and find out that didn't fix anything and is something entirely different. I'm just kind of lost at the moment. I'm not knowledgeable enough to know how all of those things work together. Thanks

 

What if you're making something out of nothing?? If you have a vacuum leak it will show up in your fuel trims. Get a cheap bluetooth ODBII dongle and Torque app and check your fuel trims. I couldn't hear anything in your vid out of the ordinary, and that VSV is supposed to tick at idle.

 

Mine was making a similar rocking noise almost like a sticky valve or lifter. I was told to check my oil first but it sounds alot like videos of these evap system and canisters.

Did you fix yours?

 

Just because you threw one code after another, doesn't mean the 1st caused the 2nd.

What code are you getting? P0171?

Clean your MAF.

As for vacuum leaks, I recent just replace all the vacuum line with silicon lines. I didn't have, or suspect I had a leak, but all teh rubber lines were old enough to drive themselves, probably time to just change them all out anyway.