TDC can be located by removing the cam and a valve spring on #1 cylinder, attaching a long through dial indicater to the top of the valve, and turning engine around TDC until the indicator stops moving. Not for the faint of heart. YOu can also pull the #1 prechamber and do the same thing (carefully!), but that's a big pain, too.

I'm used the the older 615/617 pumps that are directly lubricated with engine oil in the chain case (or have rubber diaphrams), no oil in those.

I would certainly ascertain the reason for the knock before running the engine -- rotate the engine around by hand and see if you can find out what clonks. If it binds or refuses to turn, you may have jumped the timing chain a tooth on the cam gear, causing the exhaust valve to contact the piston on the exhaust stroke. You will find out when you check the chain stretch.

See if the fuel leak is from around the pressure valve holders on the IP -- were the injector lines screw on. There is an o-ring on the holders that goes bad and leaks.

You may also just have some air in the IP, causing late or intermittant injection on one cylinder -- if so, this will clear when you drive it. You can check for this by loosening the injector cap nuts one at a time -- if the knock stops, and starts again when you re-tigthen, you have a injector problem of some sort. If not, it's not fuel related.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!