Should a pcv valve slide out of the valve cover grommet effortlessly, or should there be atleast some sort of pressure/tug. I have the 4.2 so it's a totally different hose compared to the 4.6 and 5.4. This one has three hoses, one that's actual vaccum and two that have coolant that circulate behind it. I'll try to post pics. And the reason why I'm doing this, is because I got the infamous p0171/4 and everything else seems to be ok.
Thanks in advance

 

https://www.f150forum.com/f6/egr-eva...ps-iat-243366/