Haha! You'll love this one.
Well I've been working on Chevys for the last 15 years so I'm used to those PCV valves which press into the valve cover. So I go to pull my PCV valve on my DA9 and it breaks on me, and I start trying to pull the rest of it out in pieces till it's flush with the intake manifold, then I'm like "I gotta pull my intake to get the rest of it out of there and make sure there's no plastic inside my manifold. Come to find out that it's fitted into a hose that runs through the manifold! Pissed me off. But I discovered a bunch of hoses that turned to plastic from heat exposure, and also found an oil leak at my oil pressure switch. That's about when I decided to upgrade my intake system cause I figured, might as well since I pulled all that crap off anyway..