That would require you to take the engine apart and inspect all the engine bearings to know for sure. It would be easy to notice a spun bearing.
Not really. The sure tell is to pull the pan and start taking off rod and main caps.
if its a loud knock from the bottom end, DO NOT run the engine, it is likely a spun bearing; have a professional look at it
Most typical are spun rod bearings and scored bearing surfaces, increasing to knocking due to loose bearing, then piston rod breaking and cracking the block.
If the bearing has not spun or seized, you drop the oil pan, take the rod cap off of the rod and put the new bearing in. The bearing is in two pieces, half in the rod and half in the rod cap. If the bearing has spun, you should remove the crankshaft and either have the rod journal polished or machined for a thicker bearing.
Only if it all leaks out.
A spun--Bad rod bearing. NO OIL PRESSURE.
Lack of oil changes. Will. Cause a bering to spin
bad oil pump or a spun rod\main bearing
lifter tick or a spun rod bearing
The crankshaft may not have to be turned if the journals are smooth/undamaged but you should have it checked if you got it in your hand. It could be out of round.
Bad enough that the oil pan will have to be removed and the rod bearing replaced if that is all the damage that has been done. You will also need to find out why this happened.
The term SPUN means that the bearing has broken free from it's normal set spot in the cap and is badly spent. The rod or bearing cap or both may need to be replaced or maybe both.This usually only happens after extreme wear and abuse so be prepared for a total engine rebuild.