ADE is the code for Industrial 1.9TD
ADG is for Industrial 1.9NA
AAZ is the most common code for automotive 1.9TD

All of the above were sold over a period of years with differences for
different markets, intended applications, parts evolution, so no two
with the same 3 letter code are necessarily exactly alike in every way.
Different turbos, pumps, manifolds, emissions fittings, etc, same code.

Mark

Scott Daniel - Turbovans wrote:
> EDE I think is a code for an industrial 1.9TD engine.
> I bought 3 of them once,
> One had an injection pump wih a very sharp 'cut-off' at the top of rpm
> band.
> Not like power just faded when rpm's got way up there...
> it would drop power delivery aprubtly at 4,500 rpm or so.
> Very noticeable in the lower gears , not so much higher gears.
>
> the engine itself though .........all new, all german, and really solid.
>
>