Engine light/restricted perform/misfire on #2/covered in oil

On a 2003 jag s type 3.0 v6 4 door...check engine light / restricted performance/ cleaned the sensors/ throttle body actuator clip fell apart/no accelerator response/ while looking at the engine right side coil packs after the 3rd one, found a open hole ??? Into the engine. (Didn't think that right no sensor on the wiring harness for that location, looking at that side as example.... I put a plug in it. ) / the clip and no manual held me up for 3 weeks trying to get replacement with little funds. Online or napa $5.- $125. ( Part numbers I did find didn't translate to auto store part numbers) /so with no clip just squeezed wire ends so they stayed on the pins of the throttle body/ orange wire on top grn on bottom/had accel response yeppie/then put the code reader again/ now #2 misfire on ond meter. Check the coil pack on #2 it's saturated in oil,check the other 2 on that bank also saturated in oil ???/ Cleaned out the oil and coil packs/ put engine cleaner via gas thru it runs better still cuts out if I accell to fast and still a rough idle/Have not removed the manifold to check the left bank of coil packs has oil in them as well (not without a repair manual and gasget replacements)/ now however the check engine light is flashing now along with the red warning light on the dash still restricted perform.  That's the sequence of troubleshooting this far. Have gotten responses....new engine/ blown worn head gasket / piston rings / to the catalytic converter/ me... the plug I put in (matching the other ones???)...  filling the hole...couldn't find anything as to what should be there really...Any suggestions asap greatly appreciated. 

Thanks G.