So I just bought a 02 Dodge Ram 1500 4.7L Auto and the previous owner at some point put 12.... TWELVE quarts of oil in the engine.. I went around the block drained out about 4 to get me home. The truck misfires pretty bad and I figured it was due to oil seeping past the ring and fouling the plugs. I changed the oil and put in the correct amount, then I let it run for a bit to try to clear out some oil. I changed all the plugs and 2 were completely soaked with oil. There was no way those 2 were firing. I figured great itll run much better.. I even turned the truck over a few times to try to shoot more oil out before putting new plugs in. After new plugs it started up and was running better but still an obvious misfire. I can't really cruise at a pace without going into O/D to up the RPMs otherwise it starts shuttering. My question is I guess what do I do at this point? I removed battery and now I don't get check light (P 0300 code was there) but im sure its going to come back. The ignition coils don't look bad and i cleaned any oil in/on them.

 

Update.. i reset codes a p0307 came up. Pulled that coil off and no change in the engine so i put a spark plug in it and i can see it sparking. Not sure how it's not firing then.. a tested another one that wasn't firing and it also shows spark. Kind of at my wits end here but I'll swap around coil packs and see if that helps ..

 

Update: The valves are bent. Rip

 

How did the valves get bent??