I did something bad, hears the reader digest virsion,..I was replacing a freeze plug that fell out of my explorer (1996 4.0 engine) I never done this before butt i looked easy enough, it took me three trys to get it in, my problem is the first two fell into the water jacket of the block. ( i know stupid!) is their any way to get them out? my explorer run for a while ( few weeks) then overheated ... I was told i cracked the heads or head gaskets. I used some " steel seal" which i bought online for the cracked head or gaskets which seemed to work just fine, but now it overheats right away and coolant does not seem to be flowing. I removed the t-stat to see if coolant was flowing in the rad. but it just comes out the top of the cap. could these freeze plugs that i dropped into the water jacket be blocking the flow?