Do you have a bike pump @Faheem,that will blow sufficiently to blow whatever is down there out. I'm still uncertain what you mean by "I can tighten all of them besides the first plug which for some reason can't get grip on to" do you mean it won't begin threading into the opening? That would back up my theory of someone cross threading a plug in the past and the plug loosening and blowing out of the cylinder head! JIM