Originally Posted by JDMH22WAG

most motors have that morning knock when its cold alot of pplz say its when u use a aftermarket oil filter when the car is off for a long time the filter emptys its self out so when u go to start it it has to fill up again...its like if u start up a brand new rebuilt motor if u dont charge the pump or have oil in the system it will sound a knock untill the oil runs through nothing to really worrie about good price bump