Re: Engine Rebuild

Posted by David Baird On 2010/5/27 22:07:12

Another thing I have found is that the fuel pump can make the same kind of sound. These pumps use a spacer around the bolts and if they are missing and the bolts loosen, the pump can move away from the cam and cause a knocking sound. These bolts can loosen themselves through use. That's why Packard used safety wire on these bolts. It's an easy check just take the pump off and see if the fuel pump holes are considerably larger than the bolts. If they are and the spacers are missing replace them and your noise may go away. Hopefully, this is the problem. It's a cheap fix.