1987 300 TD - Rebuilt one of my injectors today...

[1987-300TD]

I have no idea how many miles are on my injectors. Odometer has not worked for 1+ years and it is not even the original. (It is not even the proper part number.)

So today I decided to start rebuilding my injectors. I cleaned the heck out of the one I did. Used a nylon brush to clean the inside. The insides were stuck together with grease.

Cleaned out the area where the injector screws to the headers. Took extra precautions not to drop anything into the chamber.

Tighten everything down to 55 ft lbs. Reconnect the hard line. Reconnect the return lines.

Now injector #6 knocks like I have marbles in there! Let it run for approximately 1 minute. No change.

I did realize afterward that I did not replace a shim in the injector. Could this be the problem?

Any thoughts? I was hoping to replace them without pop testing. One of the how-to's I read recommended replacing the injectors one at a time as it helps to keep air out of the system.

Should I pull them all and get them all balanced? Advice?

Thank You!