Hi I've noticed this post is from 2015 and it's now 4 years later, just wanted to say I have the same issue, fortunately mine hadn't gotten scored and just had some surface scratches so all the parts were still fine to use, sent my car to the shop to get diagnosed after swaping plugs and coils, checking fuel pressure and timing. Got a call saying no compression in cylinder 4, all said and done. I got it in my driveway, pulled the valve cover off and saw the exact same issue, I haven't pulled my intake manifold off, not sure if I should even worry about it. If you get this would love to have an input from you about wether I should take it off or not, ive also thought about buying another one and taking the plastic out.