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1997 Ford Expedition 5.4 My Magnetic stick fell into my 4th cylinder spark plug hole 97 expedition the only way to get it out was to turn on the engine for it to shoot out it indeed came out but the small round magnetic was still in I cold not get it out so I hope for it to come out while driving home for it to go through the exhaust while driving I herd it making noise then after that I didn’t hear it any more but now my truck misfire a lot what damage did I do or could it be stuck somewhere in the engine now I’ve noticed some oil leaking under my truck please help

@cliffdog, Clifton, Remove spark plug and see if end is broken off/damaged, if lucky minimal damage and replace plug and try. Probable damaged the piston/cylinder wall, you or a good mechanic will have to use a video scope to look in cylinder/engine or do partial tear down to see extent of damage. If extensive damage is found, engine may need rebuilt or possibly replaced with a good used engine from a local auto recycler to make it cost effective. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.