I have a 2.0 TDI with a 140bhp 16v PD engine. I removed the injectors and installed new seal kits for both the 1.9 and 2.0 engines. I sent the cylinder head to be smoothed out, but I can't remember if it had a copper ring in the block because it was missing when I collected it. Additionally, the new copper ring did not fit my injectors.

I recall that my old 1.9 8v PD 115 had different injectors, which featured a flat end on the needles that used copper rings. In contrast, my current injectors have a cone end. Should these injectors fit without copper rings? Is that how it's supposed to be?

I believe the 2.0 16v TDi doesn't have a copper seal. Well it's not in the seal kits that are available for the BKD engine.

See: Seal Kit