biggin69
NAXJA Forum User
- Location
- Hamilton, OH
I picked up a 97 XJ 4.0 from a friend at work. It needs a leaking freeze plug on the back of the motor replaced. I changed the oil (10w-30) in it a couple days ago and have notice a knock coming from the bottom end every since. I put a piece of rubber hose on the pan to listen and it was the same as on the bell housing. I need to drop the trans to replace the freeze plug but do not want to mess with it if the main or rod bearings are going out. I pulled each plug wire off one at a time while running and the knock did not change. It does it hot, cold, nuetral, in gear, and increases with motor speed. I am hoping it is the flex plate but is there any way of being sure without dropping the trans? Thanks everyone for the wonderful site!