Jim:

You definately know that I appreciate all your help and advise, but why would you write, "I don't think that is a good sigh"?

Without your reasoning of why you feel this way, how am I suppose to understand or learn anything about my problem?

I don't think I have read anything on here that says anything other than opening up the lines will either cause the knock to go away or not. And, why does it not make sense that if you open up a "good" line it would cause pressure to drop on all the lines? Especially if it were for just a brief second, then it stabalize. Are each of the lines coming off the injector pump all part of the same presurization system or do each of the lines act completely independantly of each other?

Are you thinking the IP is going bad???? Do you still think a rod is bad?