New to the site and need some advice. Just recently bought an a4 hard top 94 TA.The good= body is in great shape, interior is next to perfect.The ugly= I've got a knock. Car cranks and runs fine oil pressure is good but it knocks. I drained the oil when i bought it didnt see any debris or any on the drain plug..didnt pull the filter just put in new oil only shop i have access to is my dads body shop so i was on a time restraint the noise level of the knock droped with new oil. Could it be a push rod or is it a spun bearing ive been told if it was a push rod it would skip and run bad but ive also been told it wouldnt.Do I need to commit and pull the oil pan and look i just dont want to take a bay of my dads shop and pull it for nothing! Thanks a bunch!