Yeah, I have smoke on start up....light in color, but after the car warms up the smoke is gone. Actaully when the car gets heated up the knocking worsens and the smoke disappears. On start up the knock is pretty small.

I have a history on the car.

Bought it for $200 a month ago from a young couple who NEVER did a single thing for the car. All the fuel lines were cracked and leaking...filters years old. Car started, but shook badly on idle...went 10mph max blew TONs of white smoke, engine strained horribly.

I pulled the turbo to make sure it wasn't seized...it was good.

Read a bunch of stuff on here to help....changed all the fuel lines and filters. NO CHANGE. Thought...stupid bad previous owners....diesel.....GAS!!!!!! yeah the fuel was the issue. Ran "new" diesel through like diesel purge and it came back to life.

Ended up having just a little fuel left so I filled it up and put a bunch of diesel fuel treatment in (two tanks since then)....Right after I regained the power from the new fuel I took it driving on the highway to clear out things. Only about an hour drive and by the time I returned to city driving the knock was present. Since then I have diesel purged, injector swapped, valve adjustment (twice to make sure), cleared out all the goop in the alda banjo bolt (a lot like what was in the glow plug hole), checked the other banjo bolts with the fuel lines (that I could find).

I found another posting that sounded a lot like mine but the "reference posts" suggested are gone. The metalic sounding knock appears top front...worse after warmed up...increases rate with increased rpms. Loudest on take off from a start....masked/gone on the highway. Power feels fine, acceleration feels good.

Would any more info be helpful?